Vulnerability Details : CVE-2011-2699
The IPv6 implementation in the Linux kernel before 3.1 does not generate Fragment Identification values separately for each destination, which makes it easier for remote attackers to cause a denial of service (disrupted networking) by predicting these values and sending crafted packets.
Vulnerability category: Denial of service
Threat overview for CVE-2011-2699
Top countries where our scanners detected CVE-2011-2699
Top open port discovered on systems with this issue
49152
IPs affected by CVE-2011-2699 4,372
Threat actors abusing to this issue?
Yes
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Exploit prediction scoring system (EPSS) score for CVE-2011-2699
Probability of exploitation activity in the next 30 days: 1.22%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 83 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2011-2699
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
7.8
|
HIGH | AV:N/AC:L/Au:N/C:N/I:N/A:C |
10.0
|
6.9
|
NIST |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
References for CVE-2011-2699
-
https://github.com/torvalds/linux/commit/87c48fa3b4630905f98268dde838ee43626a060c
ipv6: make fragment identifications less predictable · torvalds/linux@87c48fa · GitHubPatch;Third Party Advisory
-
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1
Mailing List;Patch;Vendor Advisory
-
http://www.securitytracker.com/id?1027274
Solaris Multiple Bugs Let Remote Users Access and Modify Data and Deny Service and Local Users Gain Elevated Privileges - SecurityTrackerThird Party Advisory;VDB Entry
-
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=87c48fa3b4630905f98268dde838ee43626a060c
-
http://www.openwall.com/lists/oss-security/2011/07/20/5
oss-security - Re: CVE request: kernel: ipv6: make fragment identifications less predictableMailing List;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=723429
723429 – (CVE-2011-2699) CVE-2011-2699 kernel: ipv6: make fragment identifications less predictableIssue Tracking;Patch;Third Party Advisory
Products affected by CVE-2011-2699
- cpe:2.3:o:redhat:enterprise_linux:4.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*