Description
Stack-based buffer overflow in socat 1.3.0.0 through 1.7.2.2 and 2.0.0-b1 through 2.0.0-b6 allows local users to cause a denial of service (segmentation fault) via a long server name in the PROXY-CONNECT address in the command line.
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 | socat | 1.7.2.3-1 | — |
| Debian 13 | socat | 1.7.2.3-1 | — |
| Debian 12 | socat | 1.7.2.3-1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP4 | socat | 1.7.0.0-1.18.2 | SUSE-SU-2016:0343-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 11 SP4 | socat | 1.7.0.0-1.18.2 | SUSE-SU-2016:0343-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | socat | 1.7.3.1-2.7 | openSUSE-SU-2024:10371-1 |
Advisories 2
- SUSE-SU-2016:0343-1 Security update for socat SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10371-1 socat-1.7.3.1-2.7 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- FEDORA-2014-1795 vendor-advisory
- MDVSA-2014:033 vendor-advisory
- 65201 vdb-entry
- 102612 vdb-entry
- [oss-security] 20140128 Socat security advisory 5 - PROXY-CONNECT address overflow mailing-list
- http://www.dest-unreach.org/socat
- http://www.dest-unreach.org/socat/contrib/socat-secadv5.txt
- openSUSE-SU-2015:0760 vendor-advisory
- FEDORA-2014-1811 vendor-advisory