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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.72%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 6.72% probability · 94th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- php/php · opensuse/opensuse · suse/linux enterprise
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.htmlMailing List
- http://php-security.org/2010/05/02/mops-2010-003-php-dechunk-filter-signed-comparison-vulnerability/index.htmlBroken Link, Exploit
- http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.htmlMailing List
- http://php-security.org/2010/05/02/mops-2010-003-php-dechunk-filter-signed-comparison-vulnerability/index.htmlBroken Link, Exploit
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.