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TI-2008-01650 Aliases CVE-2008-1721GHSA-3hc2-c7c2-f785

Integer signedness error in the zlib extension module in Python 2.5.2 and earlier allows…

Priority MEDIUM 53CWE-681Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Partial · Partial · Partial
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

EPSS 0.22621 97th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 2 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*2.4.0 to before 2.4.6; 2.5.0 – 2.5.2Vulnerablepython-pillow
cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*4.0VulnerableDebian
cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*6.06VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:7.04:*:*:*:*:*:*:*7.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:7.10:*:*:*:*:*:*:*7.10VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:*8.04VulnerableCanonical
  • cpe:2.3:a:python:python:*:*:*:*:*:*:*:* Versions 2.4.0 to before 2.4.6; 2.5.0 – 2.5.2 Vulnerable ·python-pillow
  • cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Debian
  • cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:* Versions 6.06 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:7.04:*:*:*:*:*:*:* Versions 7.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:7.10:*:*:*:*:*:*:* Versions 7.10 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:* Versions 8.04 Vulnerable ·Canonical

Remediation

Red Hat 2 advisories

  • RHSA-2009:1177 Released 2009-07-27 · Red Hat rating Moderate
    python security update
    • Red Hat Enterprise Linux AS version 4 python-2.3.4-14.7.el4_8.2, python-2.3.4-14.7.el4_8.2.i386, python-2.3.4-14.7.el4_8.2.ia64 +17
    • Red Hat Enterprise Linux Desktop version 4 python-2.3.4-14.7.el4_8.2, python-2.3.4-14.7.el4_8.2.i386, python-devel-2.3.4-14.7.el4_8.2 +7
    • Red Hat Enterprise Linux ES version 4 python-2.3.4-14.7.el4_8.2, python-2.3.4-14.7.el4_8.2.i386, python-2.3.4-14.7.el4_8.2.ia64 +12
    • Red Hat Enterprise Linux WS version 4 python-2.3.4-14.7.el4_8.2, python-2.3.4-14.7.el4_8.2.i386, python-2.3.4-14.7.el4_8.2.ia64 +12
  • RHSA-2009:1176 Released 2009-07-27 · Red Hat rating Moderate
    python security update
    • Red Hat Enterprise Linux (v. 5 server) python-2.4.3-24.el5_3.6, python-2.4.3-24.el5_3.6.i386, python-2.4.3-24.el5_3.6.ia64 +13
    • Red Hat Enterprise Linux Desktop (v. 5 client) python-2.4.3-24.el5_3.6, python-2.4.3-24.el5_3.6.i386, python-tools-2.4.3-24.el5_3.6 +3
    • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) python-2.4.3-24.el5_3.6, python-devel-2.4.3-24.el5_3.6, python-devel-2.4.3-24.el5_3.6.i386

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2009:1176
Red Hat Enterprise Linux AS version 4Fixed RHSA-2009:1177
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2009:1176
Red Hat Enterprise Linux Desktop Workstation (v. 5 client)Fixed RHSA-2009:1176
Red Hat Enterprise Linux Desktop version 4Fixed RHSA-2009:1177
Red Hat Enterprise Linux ES version 4Fixed RHSA-2009:1177
Red Hat Enterprise Linux WS version 4Fixed RHSA-2009:1177

Timeline

  1. 2026-10-02 Threatist record created from CVE-2008-1721
  2. 2026-10-03 Alias added: GHSA-3hc2-c7c2-f785

References

Exploit 1

Advisory 13

Other 5

Sources

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