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Cisco » IOS : Security Vulnerabilities (CVSS score between 5 and 5.99)

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# CVE ID CWE ID # of Exploits Vulnerability Type(s) Publish Date Update Date Score Gained Access Level Access Complexity Authentication Conf. Integ. Avail.
1 CVE-2014-2143 DoS 2014-04-04 2014-04-04
5.0
None Remote Low Not required None None Partial
The IKE implementation in Cisco IOS 15.4(1)T and earlier and IOS XE allows remote attackers to cause a denial of service (security-association drop) via crafted Main Mode packets, aka Bug ID CSCun31021.
2 CVE-2013-6693 119 DoS Overflow 2013-11-21 2013-11-22
5.4
None Remote High Not required None None Complete
The MLDP implementation in Cisco IOS 15.3(3)S and earlier on 7600 routers, when many VRFs are configured, allows remote attackers to cause a denial of service (chunk corruption and device reload) by establishing many multicast flows, aka Bug ID CSCue22345.
3 CVE-2013-5527 20 DoS 2013-10-10 2013-10-23
5.7
None Local Network Medium Not required None None Complete
The OSPF functionality in Cisco IOS and IOS XE allows remote attackers to cause a denial of service (device reload) via crafted options in an LSA type 11 packet, aka Bug ID CSCui21030.
4 CVE-2013-5499 DoS 2013-10-10 2013-10-10
5.7
None Local Network Medium Not required None None Complete
The remember feature in the DHCP server in Cisco IOS allows remote attackers to cause a denial of service (device reload) by acquiring a lease and then sending a DHCPRELEASE message, aka Bug ID CSCuh46822.
5 CVE-2013-3436 264 Bypass 2013-07-19 2014-01-23
5.0
None Remote Low Not required Partial None None
The default configuration of the Group Encrypted Transport VPN (GET VPN) feature on Cisco IOS uses an improper mechanism for enabling Group Domain of Interpretation (GDOI) traffic flow, which allows remote attackers to bypass the encryption policy via certain uses of UDP port 848, aka Bug ID CSCui07698.
6 CVE-2013-1100 399 DoS 2013-02-13 2013-02-14
5.4
None Remote High Not required None None Complete
The HTTP server in Cisco IOS on Catalyst switches does not properly handle TCP socket events, which allows remote attackers to cause a denial of service (device crash) via crafted packets on TCP port (1) 80 or (2) 443, aka Bug ID CSCuc53853.
7 CVE-2013-0149 DoS +Info 2013-08-05 2013-08-13
5.8
None Remote Medium Not required Partial None Partial
The OSPF implementation in Cisco IOS 12.0 through 12.4 and 15.0 through 15.3, IOS-XE 2.x through 3.9.xS, ASA and PIX 7.x through 9.1, FWSM, NX-OS, and StarOS before 14.0.50488 does not properly validate Link State Advertisement (LSA) type 1 packets before performing operations on the LSA database, which allows remote attackers to cause a denial of service (routing disruption) or obtain sensitive packet information via a (1) unicast or (2) multicast packet, aka Bug IDs CSCug34485, CSCug34469, CSCug39762, CSCug63304, and CSCug39795.
8 CVE-2012-3915 119 DoS Overflow 2012-09-16 2013-03-25
5.0
None Remote Low Not required None None Partial
The DMVPN tunnel implementation in Cisco IOS 15.2 allows remote attackers to cause a denial of service (persistent IKE state) via a large volume of hub-to-spoke traffic, aka Bug ID CSCtq39602.
9 CVE-2012-1367 20 DoS 2012-08-06 2012-08-06
5.0
None Remote Low Not required None None Partial
The MallocLite implementation in Cisco IOS 12.0, 12.2, 15.0, 15.1, and 15.2 allows remote attackers to cause a denial of service (Route Processor crash) via a BGP UPDATE message with a modified local-preference (aka LOCAL_PREF) attribute length, aka Bug ID CSCtq06538.
10 CVE-2012-0339 20 2012-05-02 2012-10-30
5.0
None Remote Low Not required None Partial None
Cisco IOS 12.2 through 12.4 and 15.0 does not recognize the vrf-also keyword during enforcement of access-class commands, which allows remote attackers to establish TELNET connections from arbitrary source IP addresses via a standard TELNET client, aka Bug ID CSCsi77774.
11 CVE-2012-0338 20 2012-05-02 2012-10-30
5.0
None Remote Low Not required None Partial None
Cisco IOS 12.2 through 12.4 and 15.0 does not recognize the vrf-also keyword during enforcement of access-class commands, which allows remote attackers to establish SSH connections from arbitrary source IP addresses via a standard SSH client, aka Bug ID CSCsv86113.
12 CVE-2011-4019 399 DoS 2012-05-03 2012-05-30
5.4
None Remote High Not required None None Complete
Memory leak in Cisco IOS 12.4 and 15.0 through 15.2, and Cisco Unified Communications Manager (CUCM) 7.x, allows remote attackers to cause a denial of service (memory consumption) via a crafted response to a SIP SUBSCRIBE message, aka Bug IDs CSCto93837 and CSCtj61883.
13 CVE-2011-4016 16 DoS 2012-05-02 2012-10-29
5.4
None Remote High Not required None None Complete
The PPP implementation in Cisco IOS 12.2 and 15.0 through 15.2, when Point-to-Point Termination and Aggregation (PTA) and L2TP are used, allows remote attackers to cause a denial of service (device crash) via crafted network traffic, aka Bug ID CSCtf71673.
14 CVE-2011-4015 20 DoS 2012-05-02 2012-10-29
5.0
None Remote Low Not required None None Partial
Cisco IOS 15.2S allows remote attackers to cause a denial of service (interface queue wedge) via malformed UDP traffic on port 465, aka Bug ID CSCts48300.
15 CVE-2011-4007 20 DoS 2012-05-02 2012-10-29
5.4
None Remote High Not required None None Complete
Cisco IOS 15.0 and 15.1 and IOS XE 3.x do not properly handle the "set mpls experimental imposition" command, which allows remote attackers to cause a denial of service (device crash) via network traffic that triggers (1) fragmentation or (2) reassembly, aka Bug ID CSCtr56576.
16 CVE-2011-2586 20 DoS 2012-05-02 2012-10-29
5.4
None Remote High Not required None None Complete
The HTTP client in Cisco IOS 12.4 and 15.0 allows user-assisted remote attackers to cause a denial of service (device crash) via a malformed HTTP response to a request for service installation, aka Bug ID CSCts12249.
17 CVE-2011-2395 16 Bypass 2011-06-08 2011-09-21
5.0
None Remote Low Not required None Partial None
The Neighbor Discovery (ND) protocol implementation in Cisco IOS on unspecified switches allows remote attackers to bypass the Router Advertisement Guarding functionality via a fragmented IPv6 packet in which the Router Advertisement (RA) message is contained in the second fragment, as demonstrated by (1) a packet in which the first fragment contains a long Destination Options extension header or (2) a packet in which the first fragment contains an ICMPv6 Echo Request message.
18 CVE-2011-2059 200 +Info 2011-10-21 2012-05-14
5.0
None Remote Low Not required Partial None None
The ipv6 component in Cisco IOS before 15.1(4)M1.3 allows remote attackers to conduct fingerprinting attacks and obtain potentially sensitive information about the presence of the IOS operating system via an ICMPv6 Echo Request packet containing a Hop-by-Hop (HBH) extension header (EH) with a 0x0c01050c value in the PadN option data, aka Bug ID CSCtq02219.
19 CVE-2011-1625 362 DoS 2011-08-18 2012-03-15
5.4
None Remote High Not required None None Complete
Cisco IOS 12.2, 12.3, 12.4, 15.0, and 15.1, when the data-link switching (DLSw) feature is configured, allows remote attackers to cause a denial of service (device crash) by sending a sequence of malformed packets and leveraging a "narrow timing window," aka Bug ID CSCtf74999, a different vulnerability than CVE-2007-0199, CVE-2008-1152, and CVE-2009-0629.
20 CVE-2010-4687 DoS 2011-01-07 2011-01-19
5.0
None Remote Low Not required None None Partial
STCAPP (aka the SCCP telephony control application) on Cisco IOS before 15.0(1)XA1 does not properly handle multiple calls to a shared line, which allows remote attackers to cause a denial of service (port hang) by simultaneously ending two calls that were controlled by CallManager Express (CME), aka Bug ID CSCtd42552.
21 CVE-2009-2049 16 DoS 2009-07-30 2010-08-21
5.4
None Remote High Not required None None Complete
Cisco IOS 12.0(32)S12 through 12.0(32)S13 and 12.0(33)S3 through 12.0(33)S4, 12.0(32)SY8 through 12.0(32)SY9, 12.2(33)SXI1 through 12.2(33)SXI2, 12.2XNC before 12.2(33)XNC2, 12.2XND before 12.2(33)XND1, and 12.4(24)T1; and IOS XE 2.3 through 2.3.1t and 2.4 through 2.4.0; when RFC4893 BGP routing is enabled, allows remote attackers to cause a denial of service (device reload) by using an RFC4271 peer to send a malformed update, aka Bug ID CSCta33973.
22 CVE-2009-0629 DoS 2009-03-27 2009-07-24
5.4
None Remote High Not required None None Complete
The (1) Airline Product Set (aka ALPS), (2) Serial Tunnel Code (aka STUN), (3) Block Serial Tunnel Code (aka BSTUN), (4) Native Client Interface Architecture (NCIA) support, (5) Data-link switching (aka DLSw), (6) Remote Source-Route Bridging (RSRB), (7) Point to Point Tunneling Protocol (PPTP), (8) X.25 for Record Boundary Preservation (RBP), (9) X.25 over TCP (XOT), and (10) X.25 Routing features in Cisco IOS 12.2 and 12.4 allows remote attackers to cause a denial of service (device reload) via a series of crafted TCP packets.
23 CVE-2008-1156 200 +Info 2008-03-27 2009-03-04
5.1
User Remote High Not required Partial Partial Partial
Unspecified vulnerability in the Multicast Virtual Private Network (MVPN) implementation in Cisco IOS 12.0, 12.2, 12.3, and 12.4 allows remote attackers to create "extra multicast states on the core routers" via a crafted Multicast Distribution Tree (MDT) Data Join message.
24 CVE-2007-5550 200 +Info 2007-10-18 2008-09-05
5.0
None Remote Low Not required Partial None None
Unspecified vulnerability in Cisco IOS allows remote attackers to obtain the IOS version via unspecified vectors involving a "common network service", aka PSIRT-1255024833. NOTE: as of 20071016, the only disclosure is a vague pre-advisory with no actionable information. However, since it is from a well-known researcher, it is being assigned a CVE identifier for tracking purposes.
25 CVE-2007-4430 20 DoS 2007-08-20 2011-05-18
5.0
None Remote Low Not required None None Partial
Unspecified vulnerability in Cisco IOS 12.0 through 12.4 allows context-dependent attackers to cause a denial of service (device restart and BGP routing table rebuild) via certain regular expressions in a "show ip bgp regexp" command. NOTE: unauthenticated remote attacks are possible in environments with anonymous telnet and Looking Glass access.
26 CVE-2007-0199 DoS 2007-01-11 2009-03-04
5.0
None Remote Low Not required None None Partial
The Data-link Switching (DLSw) feature in Cisco IOS 11.0 through 12.4 allows remote attackers to cause a denial of service (device reload) via "an invalid value in a DLSw message... during the capabilities exchange."
27 CVE-2006-3906 DoS 2006-07-27 2009-03-04
5.0
None Remote Low Not required None None Partial
Internet Key Exchange (IKE) version 1 protocol, as implemented on Cisco IOS, VPN 3000 Concentrators, and PIX firewalls, allows remote attackers to cause a denial of service (resource exhaustion) via a flood of IKE Phase-1 packets that exceed the session expiration rate. NOTE: it has been argued that this is due to a design weakness of the IKE version 1 protocol, in which case other vendors and implementations would also be affected.
28 CVE-2005-3669 DoS 2005-11-18 2009-03-04
5.0
None Remote Low Not required None None Partial
Multiple unspecified vulnerabilities in the Internet Key Exchange version 1 (IKEv1) implementation in multiple Cisco products allow remote attackers to cause a denial of service (device reset) via certain malformed IKE packets, as demonstrated by the PROTOS ISAKMP Test Suite for IKEv1. NOTE: due to the lack of details in the Cisco advisory, it is unclear which of CVE-2005-3666, CVE-2005-3667, and/or CVE-2005-3668 this issue applies to.
29 CVE-2005-0196 DoS 2005-05-02 2009-03-04
5.0
None Remote Low Not required None None Partial
Cisco IOS 12.0 through 12.3YL, with BGP enabled and running the bgp log-neighbor-changes command, allows remote attackers to cause a denial of service (device reload) via a malformed BGP packet.
30 CVE-2005-0195 DoS 2005-05-02 2009-03-04
5.0
None Remote Low Not required None None Partial
Cisco IOS 12.0S through 12.3YH allows remote attackers to cause a denial of service (device restart) via a crafted IPv6 packet.
31 CVE-2005-0186 DoS 2005-01-19 2009-03-04
5.0
None Remote Low Not required None None Partial
Cisco IOS 12.1YD, 12.2T, 12.3 and 12.3T, when configured for the IOS Telephony Service (ITS), CallManager Express (CME) or Survivable Remote Site Telephony (SRST), allows remote attackers to cause a denial of service (device reboot) via a malformed packet to the SCCP port.
32 CVE-2004-1775 2004-12-31 2008-09-05
5.0
None Remote Low Not required None Partial None
Cisco VACM (View-based Access Control MIB) for Catalyst Operating Software (CatOS) 5.5 and 6.1 and IOS 12.0 and 12.1 allows remote attackers to read and modify device configuration via the read-write community string.
33 CVE-2004-1454 DoS 2004-12-31 2008-09-05
5.0
None Remote Low Not required None None Partial
Cisco IOS 12.0S, 12.2, and 12.3, with Open Shortest Path First (OSPF) enabled, allows remote attackers to cause a denial of service (device reload) via a malformed OSPF packet.
34 CVE-2004-1111 DoS 2005-01-10 2009-03-04
5.0
None Remote Low Not required None None Partial
Cisco IOS 2.2(18)EW, 12.2(18)EWA, 12.2(14)SZ, 12.2(18)S, 12.2(18)SE, 12.2(18)SV, 12.2(18)SW, and other versions without the "no service dhcp" command, keep undeliverable DHCP packets in the queue instead of dropping them, which allows remote attackers to cause a denial of service (dropped traffic) via multiple undeliverable DHCP packets that exceed the input queue size.
35 CVE-2004-0714 DoS Mem. Corr. 2004-07-27 2009-03-04
5.0
None Remote Low Not required None None Partial
Cisco Internetwork Operating System (IOS) 12.0S through 12.3T attempts to process SNMP solicited operations on improper ports (UDP 162 and a randomly chosen UDP port), which allows remote attackers to cause a denial of service (device reload and memory corruption).
36 CVE-2004-0710 DoS 2004-07-27 2009-03-04
5.0
None Remote Low Not required None None Partial
IP Security VPN Services Module (VPNSM) in Cisco Catalyst 6500 Series Switch and the Cisco 7600 Series Internet Routers running IOS before 12.2(17b)SXA, before 12.2(17d)SXB, or before 12.2(14)SY03 could allow remote attackers to cause a denial of service (device crash and reload) via a malformed Internet Key Exchange (IKE) packet.
37 CVE-2004-0589 DoS 2004-08-06 2009-03-04
5.0
None Remote Low Not required None None Partial
Cisco IOS 11.1(x) through 11.3(x) and 12.0(x) through 12.2(x), when configured for BGP routing, allows remote attackers to cause a denial of service (device reload) via malformed BGP (1) OPEN or (2) UPDATE messages.
38 CVE-2004-0112 DoS 2004-11-23 2010-08-21
5.0
None Remote Low Not required None None Partial
The SSL/TLS handshaking code in OpenSSL 0.9.7a, 0.9.7b, and 0.9.7c, when using Kerberos ciphersuites, does not properly check the length of Kerberos tickets during a handshake, which allows remote attackers to cause a denial of service (crash) via a crafted SSL/TLS handshake that causes an out-of-bounds read.
39 CVE-2004-0081 DoS 2004-11-23 2010-08-21
5.0
None Remote Low Not required None None Partial
OpenSSL 0.9.6 before 0.9.6d does not properly handle unknown message types, which allows remote attackers to cause a denial of service (infinite loop), as demonstrated using the Codenomicon TLS Test Tool.
40 CVE-2004-0079 DoS 2004-11-23 2010-08-21
5.0
None Remote Low Not required None None Partial
The do_change_cipher_spec function in OpenSSL 0.9.6c to 0.9.6k, and 0.9.7a to 0.9.7c, allows remote attackers to cause a denial of service (crash) via a crafted SSL/TLS handshake that triggers a null dereference.
41 CVE-2003-0851 DoS 2003-12-01 2009-03-04
5.0
None Remote Low Not required None None Partial
OpenSSL 0.9.6k allows remote attackers to cause a denial of service (crash via large recursion) via malformed ASN.1 sequences.
42 CVE-2003-0512 310 2003-08-27 2009-03-04
5.0
None Remote Low Not required Partial None None
Cisco IOS 12.2 and earlier generates a "% Login invalid" message instead of prompting for a password when an invalid username is provided, which allows remote attackers to identify valid usernames on the system and conduct brute force password guessing, as reported for the Aironet Bridge.
43 CVE-2003-0511 DoS 2003-08-27 2009-03-04
5.0
None Remote Low Not required None None Partial
The web server for Cisco Aironet AP1x00 Series Wireless devices running certain versions of IOS 12.2 allow remote attackers to cause a denial of service (reload) via a malformed URL.
44 CVE-2003-0305 DoS 2003-06-09 2009-03-04
5.0
None Remote Low Not required None None Partial
The Service Assurance Agent (SAA) in Cisco IOS 12.0 through 12.2, aka Response Time Reporter (RTR), allows remote attackers to cause a denial of service (crash) via malformed RTR packets to port 1967.
45 CVE-2002-2053 DoS 2002-12-31 2008-09-05
5.0
None Remote Low Not required None None Partial
The design of the Hot Standby Routing Protocol (HSRP), as implemented on Cisco IOS 12.1, when using IRPAS, allows remote attackers to cause a denial of service (CPU consumption) via a router with the same IP address as the interface on which HSRP is running, which causes a loop.
46 CVE-2002-2052 DoS 2002-12-31 2008-09-05
5.0
None Remote Low Not required None None Partial
Cisco 2611 router running IOS 12.1(6.5), possibly an interim release, allows remote attackers to cause a denial of service via port scans such as (1) scanning all ports on a single host and (2) scanning a network of hosts for a single open port through the router. NOTE: the vendor could not reproduce this issue, saying that the original reporter was using an interim release of the software.
47 CVE-2002-1768 DoS 2002-12-31 2008-09-10
5.0
None Remote Low Not required None None Partial
Cisco IOS 11.1 through 12.2, when HSRP support is not enabled, allows remote attackers to cause a denial of service (CPU consumption) via randomly sized UDP packets to the Hot Standby Routing Protocol (HSRP) port 1985.
48 CVE-2002-1706 2002-12-31 2008-09-05
5.0
None Remote Low Not required None Partial None
Cisco IOS software 11.3 through 12.2 running on Cisco uBR7200 and uBR7100 series Universal Broadband Routers allows remote attackers to modify Data Over Cable Service Interface Specification (DOCSIS) settings via a DOCSIS file without a Message Integrity Check (MIC) signature, which is approved by the router.
49 CVE-2002-0339 2002-06-25 2008-09-05
5.0
None Remote Low Not required None Partial None
Cisco IOS 11.1CC through 12.2 with Cisco Express Forwarding (CEF) enabled includes portions of previous packets in the padding of a MAC level packet when the MAC packet's length is less than the IP level packet length.
50 CVE-2001-1434 2001-02-28 2008-09-05
5.0
None Remote Low Not required Partial None None
Cisco IOS 12.0(5)XU through 12.1(2) allows remote attackers to read system administration and topology information via an "snmp-server host" command, which creates a readable "community" community string if one has not been previously created.
Total number of vulnerabilities : 67   Page : 1 (This Page)2
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