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The CGIHandler class in Python before 2.7.12 does not protect against the HTTP_PROXY…

Priority LOW 35CWE-601Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
Low · Low · None
Fix status
Partial Red Hat: 24 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-601.

Summary

The CGIHandler class in Python before 2.7.12 does not protect against the HTTP_PROXY variable name clash in a CGI script, which could allow a remote attacker to redirect HTTP requests.

Why it matters now

EPSS 0.04526 91st percentileScored 2026-11-07
Fix Partial Red Hat: 5 advisoriesRed Hat: 24 fixed, 2 without a fix

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 · 5

CPEVersionsRoleVendor
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*2.7.0 to before 2.7.13; 3.3.0 to before 3.3.7; 3.4.0 to before 3.4.6; 3.5.0 to before 3.5.3Vulnerablepython-pillow
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*23VulnerableFedoraproject
  • cpe:2.3:a:python:python:*:*:*:*:*:*:*:* Versions 2.7.0 to before 2.7.13; 3.3.0 to before 3.3.7; 3.4.0 to before 3.4.6; 3.5.0 to before 3.5.3 Vulnerable ·python-pillow
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
  • cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* Versions 23 Vulnerable ·Fedoraproject

Remediation

Red Hat 5 advisories

  • RHSA-2016:1629 Released 2016-08-18 · Red Hat rating Moderate
    python33-python security update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) python33-python-3.3.2-18.el6, python33-python-debug-3.3.2-18.el6, python33-python-devel-3.3.2-18.el6 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) python33-python-3.3.2-16.el7, python33-python-debug-3.3.2-16.el7, python33-python-devel-3.3.2-16.el7 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.6) python33-python-3.3.2-18.el6, python33-python-debug-3.3.2-18.el6, python33-python-devel-3.3.2-18.el6 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) python33-python-3.3.2-18.el6, python33-python-debug-3.3.2-18.el6, python33-python-devel-3.3.2-18.el6 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.1) python33-python-3.3.2-16.el7, python33-python-debug-3.3.2-16.el7, python33-python-devel-3.3.2-16.el7 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.2) python33-python-3.3.2-16.el7, python33-python-debug-3.3.2-16.el7, python33-python-devel-3.3.2-16.el7 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) python33-python-3.3.2-18.el6, python33-python-debug-3.3.2-18.el6, python33-python-devel-3.3.2-18.el6 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) python33-python-3.3.2-16.el7, python33-python-debug-3.3.2-16.el7, python33-python-devel-3.3.2-16.el7 +4
  • RHSA-2016:1630 Released 2016-08-18 · Red Hat rating Moderate
    rh-python34-python security update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) rh-python34-python-3.4.2-14.el6, rh-python34-python-debug-3.4.2-14.el6, rh-python34-python-devel-3.4.2-14.el6 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-python34-python-3.4.2-13.el7, rh-python34-python-debug-3.4.2-13.el7, rh-python34-python-devel-3.4.2-13.el7 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.6) rh-python34-python-3.4.2-14.el6, rh-python34-python-debug-3.4.2-14.el6, rh-python34-python-devel-3.4.2-14.el6 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) rh-python34-python-3.4.2-14.el6, rh-python34-python-debug-3.4.2-14.el6, rh-python34-python-devel-3.4.2-14.el6 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.1) rh-python34-python-3.4.2-13.el7, rh-python34-python-debug-3.4.2-13.el7, rh-python34-python-devel-3.4.2-13.el7 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.2) rh-python34-python-3.4.2-13.el7, rh-python34-python-debug-3.4.2-13.el7, rh-python34-python-devel-3.4.2-13.el7 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) rh-python34-python-3.4.2-14.el6, rh-python34-python-debug-3.4.2-14.el6, rh-python34-python-devel-3.4.2-14.el6 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-python34-python-3.4.2-13.el7, rh-python34-python-debug-3.4.2-13.el7, rh-python34-python-devel-3.4.2-13.el7 +4
  • RHSA-2016:1628 Released 2016-08-18 · Red Hat rating Moderate
    python27-python security update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) python27-python-2.7.8-18.el6, python27-python-debug-2.7.8-18.el6, python27-python-devel-2.7.8-18.el6 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) python27-python-2.7.8-16.el7, python27-python-debug-2.7.8-16.el7, python27-python-devel-2.7.8-16.el7 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.6) python27-python-2.7.8-18.el6, python27-python-debug-2.7.8-18.el6, python27-python-devel-2.7.8-18.el6 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) python27-python-2.7.8-18.el6, python27-python-debug-2.7.8-18.el6, python27-python-devel-2.7.8-18.el6 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.1) python27-python-2.7.8-16.el7, python27-python-debug-2.7.8-16.el7, python27-python-devel-2.7.8-16.el7 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.2) python27-python-2.7.8-16.el7, python27-python-debug-2.7.8-16.el7, python27-python-devel-2.7.8-16.el7 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) python27-python-2.7.8-18.el6, python27-python-debug-2.7.8-18.el6, python27-python-devel-2.7.8-18.el6 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) python27-python-2.7.8-16.el7, python27-python-debug-2.7.8-16.el7, python27-python-devel-2.7.8-16.el7 +4
Show 2 more Red Hat advisories
  • RHSA-2016:1626 Released 2016-08-18 · Red Hat rating Moderate
    python security update
    • Red Hat Enterprise Linux Client (v. 7) python-2.7.5-38.el7_2, python-libs-2.7.5-38.el7_2
    • Red Hat Enterprise Linux Client Optional (v. 7) python-debug-2.7.5-38.el7_2, python-devel-2.7.5-38.el7_2, python-test-2.7.5-38.el7_2 +2
    • Red Hat Enterprise Linux ComputeNode (v. 7) python-2.7.5-38.el7_2, python-devel-2.7.5-38.el7_2, python-libs-2.7.5-38.el7_2
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) python-debug-2.7.5-38.el7_2, python-test-2.7.5-38.el7_2, python-tools-2.7.5-38.el7_2 +1
    • Red Hat Enterprise Linux Desktop (v. 6) python-2.6.6-66.el6_8, python-libs-2.6.6-66.el6_8, tkinter-2.6.6-66.el6_8
    • Red Hat Enterprise Linux Desktop Optional (v. 6) python-devel-2.6.6-66.el6_8, python-test-2.6.6-66.el6_8, python-tools-2.6.6-66.el6_8
    • Red Hat Enterprise Linux HPC Node (v. 6) python-2.6.6-66.el6_8, python-devel-2.6.6-66.el6_8, python-libs-2.6.6-66.el6_8
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) python-test-2.6.6-66.el6_8, python-tools-2.6.6-66.el6_8, tkinter-2.6.6-66.el6_8
    • Red Hat Enterprise Linux Server (v. 6) python-2.6.6-66.el6_8, python-devel-2.6.6-66.el6_8, python-devel-2.6.6-66.el6_8.ppc +3
    • Red Hat Enterprise Linux Server (v. 7) python-2.7.5-38.el7_2, python-devel-2.7.5-38.el7_2, python-libs-2.7.5-38.el7_2 +1
    • Red Hat Enterprise Linux Server Optional (v. 6) python-test-2.6.6-66.el6_8, python-tools-2.6.6-66.el6_8, tkinter-2.6.6-66.el6_8
    • Red Hat Enterprise Linux Server Optional (v. 7) python-debug-2.7.5-38.el7_2, python-test-2.7.5-38.el7_2, python-tools-2.7.5-38.el7_2 +1
    • Red Hat Enterprise Linux Workstation (v. 6) python-2.6.6-66.el6_8, python-devel-2.6.6-66.el6_8, python-libs-2.6.6-66.el6_8 +1
    • Red Hat Enterprise Linux Workstation (v. 7) python-2.7.5-38.el7_2, python-devel-2.7.5-38.el7_2, python-libs-2.7.5-38.el7_2
    • Red Hat Enterprise Linux Workstation Optional (v. 6) python-test-2.6.6-66.el6_8, python-tools-2.6.6-66.el6_8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) python-debug-2.7.5-38.el7_2, python-test-2.7.5-38.el7_2, python-tools-2.7.5-38.el7_2 +1
  • RHSA-2016:1627 Released 2016-08-18 · Red Hat rating Moderate
    rh-python35-python security update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-python35-python-3.5.1-9.el7, rh-python35-python-debug-3.5.1-9.el7, rh-python35-python-devel-3.5.1-9.el7 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.1) rh-python35-python-3.5.1-9.el7, rh-python35-python-debug-3.5.1-9.el7, rh-python35-python-devel-3.5.1-9.el7 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.2) rh-python35-python-3.5.1-9.el7, rh-python35-python-debug-3.5.1-9.el7, rh-python35-python-devel-3.5.1-9.el7 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-python35-python-3.5.1-9.el7, rh-python35-python-debug-3.5.1-9.el7, rh-python35-python-devel-3.5.1-9.el7 +4

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 4AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 5AffectedNo fix yet
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2016:1626
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2016:1626
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2016:1626
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2016:1626
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2016:1626
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2016:1626
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2016:1626
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2016:1626
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2016:1626
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2016:1626
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2016:1626
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2016:1626
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2016:1626
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2016:1626
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2016:1626
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2016:1626
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2016:1628, RHSA-2016:1629, RHSA-2016:1630
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2016:1627, RHSA-2016:1628, RHSA-2016:1629, RHSA-2016:1630
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.6)Fixed RHSA-2016:1628, RHSA-2016:1629, RHSA-2016:1630
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7)Fixed RHSA-2016:1628, RHSA-2016:1629, RHSA-2016:1630
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.1)Fixed RHSA-2016:1627, RHSA-2016:1628, RHSA-2016:1629, RHSA-2016:1630
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.2)Fixed RHSA-2016:1627, RHSA-2016:1628, RHSA-2016:1629, RHSA-2016:1630
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2016:1628, RHSA-2016:1629, RHSA-2016:1630
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2016:1627, RHSA-2016:1628, RHSA-2016:1629, RHSA-2016:1630

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-1000110
  2. 2026-10-03 Alias added: GHSA-97ww-5p4j-7pg9

References

Sources