CVE-2010-1866

high-risk
Published 2010-05-07

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.

Do I need to act?

~
1.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
!
1 public exploit available
33920
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (7)

Php

Affected Vendors

Suse Php Opensuse

References (4)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
Broken Link http://php-security.org/2010/05/02/mops-2010-003-php-dechunk-filter-signed-compa...
Mailing List http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
Broken Link http://php-security.org/2010/05/02/mops-2010-003-php-dechunk-filter-signed-compa...
57
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 11/34 · Low
Exposure 14/34 · Moderate