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Unscored Public exploit CVE-2006-4020 EUVD-2006-4013GHSA-ccmc-8626-x545

scanf.c in PHP 5.1.4 and earlier, and 4.4.3 and earlier, allows context-dependent attackers to execute arbitrary code via a sscanf PHP func…

Published Aug 8, 2006 · Updated Aug 7, 2024 · Assigned by redhat

Description

scanf.c in PHP 5.1.4 and earlier, and 4.4.3 and earlier, allows context-dependent attackers to execute arbitrary code via a sscanf PHP function call that performs argument swapping, which increments an index past the end of an array and triggers a buffer over-read.

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Red Hat

Security tracker ↗
ReleasePackageFixed inAdvisory
RHEL 4 php +13 4.3.9-3.18 RHSA-2006:0669
RHEL 3 php +6 4.3.2-36.ent RHSA-2006:0669
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Red Hat Rhel Application Stack 1 php +16 5.1.4-1.el4s1.4 RHSA-2006:0688

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Exploit-DB 1

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 2

References