Vulnerability Details : CVE-2010-1866
The dechunk filter in PHP 5.3 through 5.3.2, when decoding an HTTP chunked encoding stream, allows context-dependent attackers to cause a denial of service (crash) and possibly trigger memory corruption via a negative chunk size, which bypasses a signed comparison, related to an integer overflow in the chunk size decoder.
Vulnerability category: OverflowMemory CorruptionDenial of service
Threat overview for CVE-2010-1866
Top countries where our scanners detected CVE-2010-1866
Top open port discovered on systems with this issue
80
IPs affected by CVE-2010-1866 2,755
Threat actors abusing to this issue?
Yes
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Exploit prediction scoring system (EPSS) score for CVE-2010-1866
Probability of exploitation activity in the next 30 days: 2.66%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 90 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2010-1866
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST |
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2010-1866
-
Assigned by: nvd@nist.gov (Primary)
-
The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.Assigned by: nvd@nist.gov (Primary)
References for CVE-2010-1866
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http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
[security-announce] SUSE Security Summary Report: SUSE-SR:2010:017Mailing List
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http://php-security.org/2010/05/02/mops-2010-003-php-dechunk-filter-signed-comparison-vulnerability/index.html
MOPS-2010-003: PHP dechunk Filter Signed Comparison Vulnerability « the Month of PHP SecurityBroken Link;Exploit
Products affected by CVE-2010-1866
- cpe:2.3:o:suse:linux_enterprise:11.0:sp1:*:*:*:*:*:*
- cpe:2.3:o:suse:linux_enterprise:11.0:-:*:*:*:*:*:*
- cpe:2.3:o:suse:linux_enterprise:10.0:sp3:*:*:*:*:*:*
- cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:opensuse:11.3:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:opensuse:11.1:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:opensuse:11.2:*:*:*:*:*:*:*