CVE-2010-1866
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
PHP 5.3 - 'PHP_dechunk()' HTTP Chunked Encoding Integer Overflow
OS impact
SUSE Affected 3 releases
| Version | Status | Fixed in |
|---|---|---|
| 11.3 | Affected | — |
| 11.2 | Affected | — |
| 11.1 | Affected | — |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| php | php | {"startIncluding":"5.3.0","endIncluding":"5.3.2"} | |
References
- http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
- http://php-security.org/2010/05/02/mops-2010-003-php-dechunk-filter-signed-comparison-vulnerability/index.html
- http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
- http://php-security.org/2010/05/02/mops-2010-003-php-dechunk-filter-signed-comparison-vulnerability/index.html
CWEs
CWE-190
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.