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TI-2011-01340 Aliases CVE-2011-1521GHSA-cq22-fw8f-mvcw

The urllib and urllib2 modules in Python 2.x before 2.7.2 and 3.x before 3.2.1 process…

Priority LOW 35CWE-399Published · 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 · None · Partial
Fix status
Fixed

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

Summary

The urllib and urllib2 modules in Python 2.x before 2.7.2 and 3.x before 3.2.1 process Location headers that specify redirection to file: URLs, which makes it easier for remote attackers to obtain sensitive information or cause a denial of service (resource consumption) via a crafted URL, as demonstrated by the file:///etc/passwd and file:///dev/zero URLs.

Why it matters now

EPSS 0.03564 89th percentileScored 2026-11-07
Fix Fixed Red Hat: 3 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 · 39

CPEVersionsRoleVendor
cpe:2.3:a:python:python:2.0:*:*:*:*:*:*:*2.0Vulnerablepython-pillow
cpe:2.3:a:python:python:2.0.1:*:*:*:*:*:*:*2.0.1Vulnerablepython-pillow
cpe:2.3:a:python:python:2.1:*:*:*:*:*:*:*2.1Vulnerablepython-pillow
cpe:2.3:a:python:python:2.1.1:*:*:*:*:*:*:*2.1.1Vulnerablepython-pillow
cpe:2.3:a:python:python:2.1.2:*:*:*:*:*:*:*2.1.2Vulnerablepython-pillow
cpe:2.3:a:python:python:2.1.3:*:*:*:*:*:*:*2.1.3Vulnerablepython-pillow
cpe:2.3:a:python:python:2.2:*:*:*:*:*:*:*2.2Vulnerablepython-pillow
cpe:2.3:a:python:python:2.2.1:*:*:*:*:*:*:*2.2.1Vulnerablepython-pillow
cpe:2.3:a:python:python:2.2.2:*:*:*:*:*:*:*2.2.2Vulnerablepython-pillow
cpe:2.3:a:python:python:2.2.3:*:*:*:*:*:*:*2.2.3Vulnerablepython-pillow
  • cpe:2.3:a:python:python:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.0.1:*:*:*:*:*:*:* Versions 2.0.1 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.1:*:*:*:*:*:*:* Versions 2.1 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.1.1:*:*:*:*:*:*:* Versions 2.1.1 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.1.2:*:*:*:*:*:*:* Versions 2.1.2 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.1.3:*:*:*:*:*:*:* Versions 2.1.3 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.2:*:*:*:*:*:*:* Versions 2.2 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.2.1:*:*:*:*:*:*:* Versions 2.2.1 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.2.2:*:*:*:*:*:*:* Versions 2.2.2 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.2.3:*:*:*:*:*:*:* Versions 2.2.3 Vulnerable ·python-pillow
Show 29 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:python:python:2.3.1:*:*:*:*:*:*:*2.3.1Vulnerablepython-pillow
cpe:2.3:a:python:python:2.3.2:*:*:*:*:*:*:*2.3.2Vulnerablepython-pillow
cpe:2.3:a:python:python:2.3.3:*:*:*:*:*:*:*2.3.3Vulnerablepython-pillow
cpe:2.3:a:python:python:2.3.4:*:*:*:*:*:*:*2.3.4Vulnerablepython-pillow
cpe:2.3:a:python:python:2.3.5:*:*:*:*:*:*:*2.3.5Vulnerablepython-pillow
cpe:2.3:a:python:python:2.3.7:*:*:*:*:*:*:*2.3.7Vulnerablepython-pillow
cpe:2.3:a:python:python:2.4.1:*:*:*:*:*:*:*2.4.1Vulnerablepython-pillow
cpe:2.3:a:python:python:2.4.2:*:*:*:*:*:*:*2.4.2Vulnerablepython-pillow
cpe:2.3:a:python:python:2.4.3:*:*:*:*:*:*:*2.4.3Vulnerablepython-pillow
cpe:2.3:a:python:python:2.4.4:*:*:*:*:*:*:*2.4.4Vulnerablepython-pillow
cpe:2.3:a:python:python:2.4.6:*:*:*:*:*:*:*2.4.6Vulnerablepython-pillow
cpe:2.3:a:python:python:2.5.1:*:*:*:*:*:*:*2.5.1Vulnerablepython-pillow
cpe:2.3:a:python:python:2.5.2:*:*:*:*:*:*:*2.5.2Vulnerablepython-pillow
cpe:2.3:a:python:python:2.5.3:*:*:*:*:*:*:*2.5.3Vulnerablepython-pillow
cpe:2.3:a:python:python:2.5.4:*:*:*:*:*:*:*2.5.4Vulnerablepython-pillow
cpe:2.3:a:python:python:2.6.1:*:*:*:*:*:*:*2.6.1Vulnerablepython-pillow
cpe:2.3:a:python:python:2.6.4:*:*:*:*:*:*:*2.6.4Vulnerablepython-pillow
cpe:2.3:a:python:python:2.6.5:*:*:*:*:*:*:*2.6.5Vulnerablepython-pillow
cpe:2.3:a:python:python:2.6.6:*:*:*:*:*:*:*2.6.6Vulnerablepython-pillow
cpe:2.3:a:python:python:2.6.7:*:*:*:*:*:*:*2.6.7Vulnerablepython-pillow
cpe:2.3:a:python:python:2.7.1:*:*:*:*:*:*:*2.7.1Vulnerablepython-pillow
cpe:2.3:a:python:python:3.0:*:*:*:*:*:*:*3.0Vulnerablepython-pillow
cpe:2.3:a:python:python:3.0.1:*:*:*:*:*:*:*3.0.1Vulnerablepython-pillow
cpe:2.3:a:python:python:3.1:*:*:*:*:*:*:*3.1Vulnerablepython-pillow
cpe:2.3:a:python:python:3.1.1:*:*:*:*:*:*:*3.1.1Vulnerablepython-pillow
cpe:2.3:a:python:python:3.1.2:*:*:*:*:*:*:*3.1.2Vulnerablepython-pillow
cpe:2.3:a:python:python:3.1.3:*:*:*:*:*:*:*3.1.3Vulnerablepython-pillow
cpe:2.3:a:python:python:3.2:*:*:*:*:*:*:*3.2Vulnerablepython-pillow
cpe:2.3:a:python:python:3.2:alpha:*:*:*:*:*:*3.2 alphaVulnerablepython-pillow
  • cpe:2.3:a:python:python:2.3.1:*:*:*:*:*:*:* Versions 2.3.1 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.3.2:*:*:*:*:*:*:* Versions 2.3.2 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.3.3:*:*:*:*:*:*:* Versions 2.3.3 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.3.4:*:*:*:*:*:*:* Versions 2.3.4 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.3.5:*:*:*:*:*:*:* Versions 2.3.5 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.3.7:*:*:*:*:*:*:* Versions 2.3.7 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.4.1:*:*:*:*:*:*:* Versions 2.4.1 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.4.2:*:*:*:*:*:*:* Versions 2.4.2 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.4.3:*:*:*:*:*:*:* Versions 2.4.3 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.4.4:*:*:*:*:*:*:* Versions 2.4.4 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.4.6:*:*:*:*:*:*:* Versions 2.4.6 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.5.1:*:*:*:*:*:*:* Versions 2.5.1 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.5.2:*:*:*:*:*:*:* Versions 2.5.2 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.5.3:*:*:*:*:*:*:* Versions 2.5.3 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.5.4:*:*:*:*:*:*:* Versions 2.5.4 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.6.1:*:*:*:*:*:*:* Versions 2.6.1 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.6.4:*:*:*:*:*:*:* Versions 2.6.4 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.6.5:*:*:*:*:*:*:* Versions 2.6.5 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.6.6:*:*:*:*:*:*:* Versions 2.6.6 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.6.7:*:*:*:*:*:*:* Versions 2.6.7 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:2.7.1:*:*:*:*:*:*:* Versions 2.7.1 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:3.0.1:*:*:*:*:*:*:* Versions 3.0.1 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:3.1:*:*:*:*:*:*:* Versions 3.1 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:3.1.1:*:*:*:*:*:*:* Versions 3.1.1 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:3.1.2:*:*:*:*:*:*:* Versions 3.1.2 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:3.1.3:*:*:*:*:*:*:* Versions 3.1.3 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:3.2:*:*:*:*:*:*:* Versions 3.2 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:3.2:alpha:*:*:*:*:*:* Versions 3.2 alpha Vulnerable ·python-pillow

Remediation

Red Hat 3 advisories

  • RHSA-2011:0554 Released 2011-05-19 · Red Hat rating Moderate
    python security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Desktop (v. 6) python-2.6.6-20.el6, python-libs-2.6.6-20.el6, tkinter-2.6.6-20.el6
    • Red Hat Enterprise Linux Desktop Optional (v. 6) python-2.6.6-20.el6, python-devel-2.6.6-20.el6, python-test-2.6.6-20.el6 +1
    • Red Hat Enterprise Linux HPC Node (v. 6) python-2.6.6-20.el6, python-libs-2.6.6-20.el6
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) python-2.6.6-20.el6, python-devel-2.6.6-20.el6, python-test-2.6.6-20.el6 +2
    • Red Hat Enterprise Linux Server (v. 6) python-2.6.6-20.el6, python-devel-2.6.6-20.el6, python-docs-2.6.6-2.el6 +2
    • Red Hat Enterprise Linux Server Optional (v. 6) python-2.6.6-20.el6, python-test-2.6.6-20.el6, python-tools-2.6.6-20.el6 +1
    • Red Hat Enterprise Linux Workstation (v. 6) python-2.6.6-20.el6, python-devel-2.6.6-20.el6, python-docs-2.6.6-2.el6 +2
    • Red Hat Enterprise Linux Workstation Optional (v. 6) python-2.6.6-20.el6, python-test-2.6.6-20.el6, python-tools-2.6.6-20.el6
  • RHSA-2011:0491 Released 2011-05-05 · Red Hat rating Moderate
    python security update
    • Red Hat Enterprise Linux AS version 4 python-2.3.4-14.10.el4, python-2.3.4-14.10.el4.i386, python-2.3.4-14.10.el4.ia64 +17
    • Red Hat Enterprise Linux Desktop version 4 python-2.3.4-14.10.el4, python-2.3.4-14.10.el4.i386, python-devel-2.3.4-14.10.el4 +7
    • Red Hat Enterprise Linux ES version 4 python-2.3.4-14.10.el4, python-2.3.4-14.10.el4.i386, python-2.3.4-14.10.el4.ia64 +12
    • Red Hat Enterprise Linux WS version 4 python-2.3.4-14.10.el4, python-2.3.4-14.10.el4.i386, python-2.3.4-14.10.el4.ia64 +12
  • RHSA-2011:0492 Released 2011-05-05 · Red Hat rating Moderate
    python security update
    • Red Hat Enterprise Linux (v. 5 server) python-2.4.3-44.el5, python-2.4.3-44.el5.i386, python-2.4.3-44.el5.ia64 +17
    • Red Hat Enterprise Linux Desktop (v. 5 client) python-2.4.3-44.el5, python-2.4.3-44.el5.i386, python-libs-2.4.3-44.el5 +5
    • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) python-2.4.3-44.el5, python-devel-2.4.3-44.el5, python-devel-2.4.3-44.el5.i386

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2011:0492
Red Hat Enterprise Linux AS version 4Fixed RHSA-2011:0491
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2011:0492
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2011:0554
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2011:0554
Red Hat Enterprise Linux Desktop Workstation (v. 5 client)Fixed RHSA-2011:0492
Red Hat Enterprise Linux Desktop version 4Fixed RHSA-2011:0491
Red Hat Enterprise Linux ES version 4Fixed RHSA-2011:0491
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2011:0554
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2011:0554
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2011:0554
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2011:0554
Red Hat Enterprise Linux WS version 4Fixed RHSA-2011:0491
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2011:0554
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2011:0554

Timeline

  1. 2026-10-02 Threatist record created from CVE-2011-1521
  2. 2026-10-03 Alias added: GHSA-cq22-fw8f-mvcw

References

Patch 4

Advisory 7

Other 11

  • TI-2016-01993 The DES and Triple DES ciphers, as used in the TLS, SSH, and IPSec protocols and other… CVSS 3.1HIGH 7.5
  • TI-2022-24108 An XML External Entity (XXE) issue was discovered in Python through 3.9.1. CVSS 3.1CRITICAL 9.8
  • TI-2022-17508 The Keccak XKCP SHA-3 reference implementation before fdc6fef has an integer overflow and… CVSS 3.1CRITICAL 9.8
  • TI-2021-02254 Python 3.x through 3.9.1 has a buffer overflow in PyCArg_repr in _ctypes/callproc.c… CVSS 3.1CRITICAL 9.8
  • TI-2007-04413 Directory traversal vulnerability in the (1) extract and (2) extractall functions in the… CVSS 3.1CRITICAL 9.8
  • TI-2014-00217 OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly… CVSS 3.1HIGH 7.4
See all 139 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences