Description
httplib2 is a comprehensive HTTP client library for Python. In httplib2 before version 0.19.0, a malicious server which responds with long series of "\xa0" characters in the "www-authenticate" header may cause Denial of Service (CPU burn while parsing header) of the httplib2 client accessing said server. This is fixed in version 0.19.0 which contains a new implementation of auth headers parsing using the pyparsing library.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| httplib2 | httplib2 | < 0.19.0 | — |
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | python-httplib2 | 0.20.2-1 | — |
| Debian 13 | python-httplib2 | 0.20.2-1 | — |
| Debian 12 | python-httplib2 | 0.20.2-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | python-httplib2 | No fix yet | — |
| Ubuntu 20.04 LTS | python-httplib2 | No fix yet | — |
| Ubuntu 18.04 LTS | python-httplib2 | No fix yet | — |
| Ubuntu 16.04 LTS | python-httplib2 | No fix yet | — |
| Ubuntu 14.04 LTS | python-httplib2 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenStack 16 | python-httplib2 +1 | 0.13.1-2.el8ost | RHSA-2021:2116 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | python-httplib2 | 0.19.0-3.3.1 | SUSE-SU-2021:1806-1 |
| SLES 15 SP2 | python-httplib2 | 0.19.0-3.3.1 | SUSE-SU-2021:1806-1 |
| SLES 15 | python-httplib2 | 0.19.0-1.8.1 | SUSE-SU-2021:1637-1 |
| SLES 12 | python-httplib2 | 0.19.0-7.7.1 | SUSE-SU-2021:1807-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP2 | python-httplib2 | 0.19.0-bp152.3.3.1 | openSUSE-SU-2021:0796-1 |
| SUSE OpenStack Cloud Crowbar 9 | python-httplib2 | 0.19.0-8.3.4 | SUSE-SU-2021:1779-1 |
| SUSE OpenStack Cloud Crowbar 8 | python-httplib2 | 0.19.0-7.3.1 | SUSE-SU-2021:1808-1 |
| SUSE OpenStack Cloud 9 | python-httplib2 | 0.19.0-8.3.4 | SUSE-SU-2021:1779-1 |
| SUSE OpenStack Cloud 8 | python-httplib2 | 0.19.0-7.3.1 | SUSE-SU-2021:1808-1 |
| SUSE OpenStack Cloud 7 | python-httplib2 | 0.19.0-7.7.1 | SUSE-SU-2021:1807-1 |
| SUSE HPE Helion OpenStack 8 | python-httplib2 | 0.19.0-7.3.1 | SUSE-SU-2021:1808-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-httplib2 | 0.19.1-1.2 | openSUSE-SU-2026:11203-1, openSUSE-SU-2024:14141-1, openSUSE-SU-2024:11231-1 |
| openSUSE Leap 15.3 | python-httplib2 | 0.19.0-3.3.1 | openSUSE-SU-2021:1806-1 |
| openSUSE Leap 15.2 | python-httplib2 | 0.19.0-lp152.6.3.1 | openSUSE-SU-2021:0772-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | py3-httplib2 | 0.19.0-r0 | — |
| Alpine v3.23 | py3-httplib2 | 0.19.0-r0 | — |
| Alpine v3.22 | py3-httplib2 | 0.19.0-r0 | — |
| Alpine v3.21 | py3-httplib2 | 0.19.0-r0 | — |
| Alpine v3.20 | py3-httplib2 | 0.19.0-r0 | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | py3-httplib2 | 0.19.0-r0 | — |
| Alpine v3.18 | py3-httplib2 | 0.19.0-r0 | — |
| Alpine v3.17 | py3-httplib2 | 0.19.0-r0 | — |
| Alpine v3.16 | py3-httplib2 | 0.19.0-r0 | — |
| Alpine v3.15 | py3-httplib2 | 0.19.0-r0 | — |
| Alpine v3.14 | py3-httplib2 | 0.19.0-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | httplib2 | < 0.19.0 | 0.19.0 | GHSA-93xj-8mrv-444m |
Advisories 12
- openSUSE-SU-2026:11203-1 python313-httplib2-0.32.0-1.1 on GA media SUSE / openSUSE Security Updates · Jul 9, 2026
- RHSA-2021:2116 Red Hat Security Advisory: Red Hat OpenStack Platform 16.1.6 (python-httplib2) security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- openSUSE-SU-2021:1806-1 Security update for python-httplib2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1779-1 Security update for python-httplib2 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11231-1 python36-httplib2-0.19.1-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1806-1 Security update for python-httplib2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1807-1 Security update for python-httplib2 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14141-1 python310-httplib2-0.22.0-4.5 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:0772-1 Security update for python-httplib2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1637-1 Security update for python-httplib2 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:0796-1 Security update for python-httplib2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1808-1 Security update for python-httplib2 SUSE / openSUSE Security Updates · Feb 4, 2026