Description
In Memcached before 1.6.22, an off-by-one error exists when processing proxy requests in proxy mode, if \n is used instead of \r\n.
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 | memcached | 1.6.22-1 | — |
| Debian 13 | memcached | 1.6.22-1 | — |
| Debian 12 | memcached | 1.6.18-1+deb12u1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | memcached | 1.6.14-1ubuntu0.1 | USN-6476-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | memcached | 1.6.22-1.1 | openSUSE-SU-2024:13427-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | memcached +2 | 1.6.22-2.amzn2023.0.1 | ALAS2023-2023-449 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | memcached | 1.6.27-1 | — |
| Azure Linux 2 (CBL-Mariner) | memcached | 1.6.22-1 | — |
Advisories 4
- USN-6476-1 memcached vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- openSUSE-SU-2024:13427-1 memcached-1.6.22-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2023-2023-449 Moderate: memcached security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Dec 14, 2023
- WID-SEC-2023-2768 memcached: Mehrere Schwachstellen ermöglichen nichtspezifizierten Angriff BSI CERT-Bund (WID) · Nov 13, 2023