Integer signedness error in the zlib extension module in Python 2.5.2 and earlier allows remote attackers to execute arbitrary code via a…

Description

Integer signedness error in the zlib extension module in Python 2.5.2 and earlier allows remote attackers to execute arbitrary code via a negative signed integer, which triggers insufficient memory allocation and a buffer overflow.

Scores

EPSS (exploitation in 30 days)

22.6% · top 2.3% of all CVEs (5 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

• n/a
• CWE-681 (opens in a new tab)All about CWE-681 and its CVEs

Affected products

• n/a

  • affected n/a

References (33)

• GLSA-200807-01 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• ADV-2008-1229 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 30872 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 28715 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• 38675 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 33937 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• MDVSA-2008:085 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
• 37471 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 29955 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• DSA-1551 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• http://www.vmware.com/security/advisories/VMSA-2009-0016.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://support.apple.com/kb/HT3438 (opens in a new tab)x_refsource_CONFIRMx_transferred
• APPLE-SA-2009-02-12 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
• 31358 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• zlib-pystringfromstringandsize-bo(41748) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• USN-632-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• 1019823 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• http://bugs.python.org/issue2586 (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://issues.rpath.com/browse/RPL-2444 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 20091120 VMSA-2009-0016 VMware vCenter and ESX update release and vMA patch release address multiple security issue in third party components (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• 3802 (opens in a new tab)third-party-advisoryx_refsource_SREASONx_transferred
• 31365 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• oval:org.mitre.oval:def:8249 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• http://support.avaya.com/css/P8/documents/100074697 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 31255 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 20080409 IOActive Security Advisory: Buffer overflow in Python zlib extension module (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• DSA-1620 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0149 (opens in a new tab)x_refsource_CONFIRMx_transferred
• oval:org.mitre.oval:def:9407 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• SSA:2008-217-01 (opens in a new tab)vendor-advisoryx_refsource_SLACKWAREx_transferred
• ADV-2009-3316 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 29889 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• oval:org.mitre.oval:def:8494 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2008-1721](https://trackcve.app/badge/CVE-2008-1721.svg)](https://trackcve.app/cve/CVE-2008-1721)

Record last updated 7 Aug 2024, 08:32 UTC.