Description
Various versions of Python do not properly restrict readline calls, which allows remote attackers to cause a denial of service (memory consumption) via a long string, related to (1) httplib - fixed in 2.7.4, 2.6.9, and 3.3.3; (2) ftplib - fixed in 2.7.6, 2.6.9, 3.3.3; (3) imaplib - not yet fixed in 2.7.x, fixed in 2.6.9, 3.3.3; (4) nntplib - fixed in 2.7.6, 2.6.9, 3.3.3; (5) poplib - not yet fixed in 2.7.x, fixed in 2.6.9, 3.3.3; and (6) smtplib - not yet fixed in 2.7.x, fixed in 2.6.9, not yet fixed in 3.3.x. NOTE: this was REJECTed because it is incompatible with CNT1 "Independently Fixable" in the CVE Counting Decisions
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | python2.7 | 2.7.6-8ubuntu0.2 | USN-2653-1 |
| Ubuntu 14.04 LTS | python3.4 | 3.4.0-2ubuntu1.1 | USN-2653-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | python +6 | 2.7.5-34.el7 | RHSA-2015:2101 |
| RHEL 6 | python +5 | 2.6.6-64.el6 | RHSA-2015:1330 |
| RHEL 2 | python27 +2 | 1.1-17.el6 | RHSA-2015:1064 |
| RHEL 2 | python27-python +6 | 2.7.8-3.el6 | RHSA-2015:1064 |
| RHEL 2 | python27-python-pip | 1.5.6-5.el6 | RHSA-2015:1064 |
| RHEL 2 | python27-python-setuptools | 0.9.8-3.el6 | RHSA-2015:1064 |
| RHEL 2 | python27-python-simplejson | 3.2.0-2.el6 | RHSA-2015:1064 |
| RHEL 2 | python27-python-wheel | 0.24.0-2.el6 | RHSA-2015:1064 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | python | 2.7.17-7.32.2 | SUSE-SU-2020:0234-1 |
| SLES 15 SP1 | python-base | 2.7.17-7.32.1 | SUSE-SU-2020:0234-1 |
| SLES 15 SP1 | python3 +1 | 3.6.10-3.42.2 | SUSE-SU-2020:0114-1 |
| SLES 15 | python | 2.7.17-7.32.2 | SUSE-SU-2020:0234-1 |
| SLES 15 | python-base | 2.7.17-7.32.1 | SUSE-SU-2020:0234-1 |
| SLES 15 | python3 +1 | 3.6.10-3.42.2 | SUSE-SU-2020:0114-1 |
| SLES 12 | python +1 | 2.7.9-14.1 | SUSE-SU-2015:1344-1 |
| SLES 12 | python-doc | 2.7.9-14.3 | SUSE-SU-2015:1344-1 |
| SLES 2 | python | 2.7.17-7.32.2 | SUSE-SU-2020:0234-1 |
| SLES 2 | python-base | 2.7.17-7.32.1 | SUSE-SU-2020:0234-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | python +1 | 2.7.9-14.1 | SUSE-SU-2015:1344-1 |
| SLES for SAP 12 | python-doc | 2.7.9-14.3 | SUSE-SU-2015:1344-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python | 2.7.18-8.1 | openSUSE-SU-2024:11202-1 |
| openSUSE Tumbleweed | python-base | 2.7.12-1.4 | openSUSE-SU-2024:10536-1 |
| openSUSE Tumbleweed | python310 | 3.10.0rc1-4.2 | openSUSE-SU-2024:11283-1 |
| openSUSE Tumbleweed | python311 | 3.11.0b1-1.1 | openSUSE-SU-2024:12089-1 |
| openSUSE Tumbleweed | python312 | 3.12.0a7-1.1 | openSUSE-SU-2024:12910-1 |
| openSUSE Tumbleweed | python313 | 3.13.0~b3-1.1 | openSUSE-SU-2024:14109-1 |
| openSUSE Tumbleweed | python314 | 3.14.0~a1-1.1 | openSUSE-SU-2024:14434-1 |
| openSUSE Tumbleweed | python315 | 3.15.0~a1-1.1 | openSUSE-SU-2025:15713-1 |
| openSUSE Tumbleweed | python36 | 3.6.15-1.1 | openSUSE-SU-2024:11284-1 |
| openSUSE Tumbleweed | python38 | 3.8.12-1.2 | openSUSE-SU-2024:11285-1 |
| openSUSE Tumbleweed | python39 | 3.9.7-2.1 | openSUSE-SU-2024:11286-1 |
| openSUSE Leap 15.1 | python3 +1 | 3.6.10-lp151.6.7.1 | openSUSE-SU-2020:0086-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | python +6 | 2.7.5-34.0.1.el7 | ELSA-2015-2101 |
| Oracle Linux 7 | python27 +2 | 1.1-20.el7 | ELSA-2015-1064 |
| Oracle Linux 7 | python27-python +6 | 2.7.8-3.el7 | ELSA-2015-1064 |
| Oracle Linux 7 | python27-python-pip | 1.5.6-5.el7 | ELSA-2015-1064 |
| Oracle Linux 7 | python27-python-setuptools | 0.9.8-5.el7 | ELSA-2015-1064 |
| Oracle Linux 7 | python27-python-simplejson | 3.2.0-3.el7 | ELSA-2015-1064 |
| Oracle Linux 7 | python27-python-wheel | 0.24.0-2.el7 | ELSA-2015-1064 |
Advisories 22
- RHSA-2015:2101 Red Hat Security Advisory: python security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2015:1330 Red Hat Security Advisory: python security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2015:1064 Red Hat Security Advisory: python27 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- USN-2653-1 python2.7, python3.2, python3.4 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- openSUSE-SU-2025:15713-1 python315-3.15.0~a1-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2024:11285-1 python38-3.8.12-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14434-1 python314-3.14.0~a1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:0086-1 Security update for python3 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1344-1 Security update for python SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11286-1 python39-3.9.7-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12910-1 python312-3.12.0a7-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11283-1 python310-3.10.0rc1-4.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12089-1 python311-3.11.0b1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14109-1 python313-3.13.0~b3-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0114-1 Security update for python3 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11284-1 python36-3.6.15-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10536-1 libpython2_7-1_0-2.7.12-1.4 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-2521 Python: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 9, 2025
- openSUSE-SU-2024:11202-1 python-2.7.18-8.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- SUSE-SU-2020:0234-1 Security update for python SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2015-1064 Moderate: python27 security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Feb 4, 2016
- ELSA-2015-2101 Moderate: python security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 23, 2015