CVE-2008-1721

Name: CVE-2008-1721
Creator: NVD / NIST
Published: 2008-04-10T19:05:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 22.62%

Last modified Jun 16, 2026

CVE-2008-1721 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 22.62% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

22.62%

97.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-681

Affected Software

Vendor	Product	Versions
Python	Python	>= 2.4.0, < 2.4.6
Python	Python	>= 2.5.0, <= 2.5.2
Debian	Debian Linux	4.0
Canonical	Ubuntu Linux	6.06
Canonical	Ubuntu Linux	7.04
Canonical	Ubuntu Linux	7.10
Canonical	Ubuntu Linux	8.04

References

http://bugs.python.org/issue2586Issue Tracking, Vendor Advisory
http://lists.apple.com/archives/security-announce/2009/Feb/msg00000.htmlMailing List, Third Party Advisory
http://secunia.com/advisories/29889Not Applicable
http://secunia.com/advisories/29955Not Applicable
http://secunia.com/advisories/30872Not Applicable
http://secunia.com/advisories/31255Not Applicable
http://secunia.com/advisories/31358Not Applicable
http://secunia.com/advisories/31365Not Applicable
http://secunia.com/advisories/33937Not Applicable
http://secunia.com/advisories/37471Not Applicable
http://secunia.com/advisories/38675Not Applicable
http://security.gentoo.org/glsa/glsa-200807-01.xmlThird Party Advisory
http://securityreason.com/securityalert/3802Exploit, Third Party Advisory
http://slackware.com/security/viewer.php?l=slackware-security&y=2008&m=slackware-security.525289Third Party Advisory
http://support.apple.com/kb/HT3438Third Party Advisory
http://support.avaya.com/css/P8/documents/100074697Third Party Advisory
http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0149Broken Link
http://www.debian.org/security/2008/dsa-1551Third Party Advisory
http://www.debian.org/security/2008/dsa-1620Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2008:085Permissions Required
http://www.securityfocus.com/archive/1/490690/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/507985/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/bid/28715Third Party Advisory, VDB Entry
http://www.securitytracker.com/id?1019823Broken Link, Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/usn-632-1Third Party Advisory
http://www.vmware.com/security/advisories/VMSA-2009-0016.htmlThird Party Advisory
http://www.vupen.com/english/advisories/2008/1229/referencesPermissions Required
http://www.vupen.com/english/advisories/2009/3316Permissions Required
https://exchange.xforce.ibmcloud.com/vulnerabilities/41748Third Party Advisory, VDB Entry
https://issues.rpath.com/browse/RPL-2444Broken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8249Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8494Broken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9407Third Party Advisory
http://bugs.python.org/issue2586Issue Tracking, Vendor Advisory
http://lists.apple.com/archives/security-announce/2009/Feb/msg00000.htmlMailing List, Third Party Advisory
http://secunia.com/advisories/29889Not Applicable
http://secunia.com/advisories/29955Not Applicable
http://secunia.com/advisories/30872Not Applicable
http://secunia.com/advisories/31255Not Applicable
http://secunia.com/advisories/31358Not Applicable
http://secunia.com/advisories/31365Not Applicable
http://secunia.com/advisories/33937Not Applicable
http://secunia.com/advisories/37471Not Applicable
http://secunia.com/advisories/38675Not Applicable
http://security.gentoo.org/glsa/glsa-200807-01.xmlThird Party Advisory
http://securityreason.com/securityalert/3802Exploit, Third Party Advisory
http://slackware.com/security/viewer.php?l=slackware-security&y=2008&m=slackware-security.525289Third Party Advisory
http://support.apple.com/kb/HT3438Third Party Advisory
http://support.avaya.com/css/P8/documents/100074697Third Party Advisory
http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0149Broken Link
http://www.debian.org/security/2008/dsa-1551Third Party Advisory
http://www.debian.org/security/2008/dsa-1620Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2008:085Permissions Required
http://www.securityfocus.com/archive/1/490690/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/507985/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/bid/28715Third Party Advisory, VDB Entry
http://www.securitytracker.com/id?1019823Broken Link, Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/usn-632-1Third Party Advisory
http://www.vmware.com/security/advisories/VMSA-2009-0016.htmlThird Party Advisory
http://www.vupen.com/english/advisories/2008/1229/referencesPermissions Required
http://www.vupen.com/english/advisories/2009/3316Permissions Required
https://exchange.xforce.ibmcloud.com/vulnerabilities/41748Third Party Advisory, VDB Entry
https://issues.rpath.com/browse/RPL-2444Broken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8249Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8494Broken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9407Third Party Advisory

Timeline

Published: Apr 10, 2008
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2008-1721?

How severe is CVE-2008-1721?

Severity scoring for CVE-2008-1721 is pending analysis. The EPSS model estimates a 22.62% probability of exploitation in the next 30 days.

How do I fix CVE-2008-1721?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2008-1721?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST