Description
Squid before 4.4, when SNMP is enabled, allows a denial of service (Memory Leak) via an SNMP packet.
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 | squid | 4.4-1 | — |
| Debian 13 | squid | 4.4-1 | — |
| Debian 12 | squid | 4.4-1 | — |
| Debian 9 | squid3 | 3.5.23-5+deb9u2 | DLA-2278-1 |
| Debian 8 | squid3 | 3.4.8-6+deb8u6 | DLA-1596-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | squid3 | 3.5.27-1ubuntu1.2 | USN-4059-1 |
| Ubuntu 16.04 LTS | squid3 | 3.5.12-1ubuntu7.7 | USN-4059-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | squid | 4.4-5.3.2 | SUSE-SU-2018:3786-1 |
| SLES 12 SP4 | squid | 3.5.21-26.12.1 | SUSE-SU-2018:3771-2 |
| SLES 12 SP3 | squid | 3.5.21-26.12.1 | SUSE-SU-2018:3771-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP4 | squid | 3.5.21-26.12.1 | SUSE-SU-2018:3771-2 |
| SLES for SAP 12 SP3 | squid | 3.5.21-26.12.1 | SUSE-SU-2018:3771-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | squid | 4.16-1.5 | openSUSE-SU-2024:11403-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | squid +2 | 7:3.5.20-17.amzn2.7.8 | ALAS2-2023-2310 |
Advisories 9
- DLA-2278-1 squid3 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1596-1 squid3 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-4059-1 squid, squid3 vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2018:3771-2 Security update for squid SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3771-1 Security update for squid SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11403-1 squid-4.16-1.5 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3786-1 Security update for squid SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2-2023-2310 Moderate: squid security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Oct 19, 2023
- WID-SEC-2023-2717 Squid: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 19, 2023
References
- https://github.com/squid-cache/squid/pull/313
- http://www.squid-cache.org/Versions/v5/changesets/squid-5-644131ff1e00c1895d77561f561d29c104ba6b11.patch
- http://www.squid-cache.org/Advisories/SQUID-2018_5.txt
- [debian-lts-announce] 20181126 [SECURITY] [DLA 1596-1] squid3 security update mailing-list
- USN-4059-1 vendor-advisory
- [debian-lts-announce] 20200710 [SECURITY] [DLA 2278-1] squid3 security update mailing-list