Integer overflow in pcre_compile.c in Perl Compatible Regular Expressions (PCRE) before 6.2, as used in multiple products such as Python,…

Description

Integer overflow in pcre_compile.c in Perl Compatible Regular Expressions (PCRE) before 6.2, as used in multiple products such as Python, Ethereal, and PHP, allows attackers to execute arbitrary code via quantifier values in regular expressions, which leads to a heap-based buffer overflow.

Scores

EPSS (exploitation in 30 days)

4.3% · top 8.8% of all CVEs (4 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

Affected products

• n/a

  • affected n/a

References (65)

• OpenPKG-SA-2005.018 (opens in a new tab)vendor-advisoryx_refsource_OPENPKGx_transferred
• http://support.avaya.com/elmodocs2/security/ASA-2005-216.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred
• 22691 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 17813 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• ADV-2006-4502 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• GLSA-200509-08 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• http://support.avaya.com/elmodocs2/security/ASA-2006-081.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
• 14620 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• ADV-2005-2659 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• FLSA:168516 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• GLSA-200509-02 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• TSLSA-2005-0059 (opens in a new tab)vendor-advisoryx_refsource_TRUSTIXx_transferred
• 22875 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• SSRT061238 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
• SSRT090208 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
• oval:org.mitre.oval:def:1659 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• http://www.ethereal.com/appnotes/enpa-sa-00021.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• SUSE-SA:2005:051 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• 16502 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• SSRT051251 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
• 21522 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 16679 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• DSA-817 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• GLSA-200508-17 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• ADV-2005-1511 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 604 (opens in a new tab)third-party-advisoryx_refsource_SREASONx_transferred
• 1014744 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• http://support.avaya.com/elmodocs2/security/ASA-2005-223.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred
• APPLE-SA-2005-11-29 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
• RHSA-2005:761 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• SUSE-SA:2005:049 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• DSA-819 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• ADV-2006-4320 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• RHSA-2005:358 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• oval:org.mitre.oval:def:1496 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• DSA-821 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• 19072 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 19532 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://www.php.net/release_4_4_1.php (opens in a new tab)x_refsource_CONFIRMx_transferred
• GLSA-200509-19 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• oval:org.mitre.oval:def:11516 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• 17252 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• GLSA-200509-12 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• SUSE-SA:2005:052 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• oval:org.mitre.oval:def:735 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• 15647 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• http://support.avaya.com/elmodocs2/security/ASA-2006-159.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
• DSA-800 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• 19193 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 102198 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
• SUSE-SA:2005:048 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• RHSA-2006:0197 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• ADV-2006-0789 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• [httpd-cvs] 20190815 svn commit: r1048742 [2/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [httpd-cvs] 20190815 svn commit: r1048743 [2/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [httpd-cvs] 20200401 svn commit: r1058586 [2/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [httpd-cvs] 20200401 svn commit: r1058587 [2/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [httpd-cvs] 20210330 svn commit: r1073139 [3/13] - in /websites/staging/httpd/trunk/content: ./ security/json/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [httpd-cvs] 20210330 svn commit: r1888194 [3/13] - /httpd/site/trunk/content/security/json/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [httpd-cvs] 20210330 svn commit: r1073140 [2/4] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [httpd-cvs] 20210330 svn commit: r1073143 [2/3] - in /websites/staging/httpd/trunk/content: ./ security/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [httpd-cvs] 20210330 svn commit: r1073149 [5/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [httpd-cvs] 20210330 svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [httpd-cvs] 20210606 svn commit: r1075470 [2/4] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html (opens in a new tab)mailing-listx_refsource_MLISTx_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-2005-2491](https://trackcve.app/badge/CVE-2005-2491.svg)](https://trackcve.app/cve/CVE-2005-2491)

Record last updated 7 Aug 2024, 22:30 UTC.