CVE-2015-1379

The signal handler implementations in socat before 1.7.3.0 and 2.0.0-b8 allow remote attackers to...

7.5 HighFix available

The signal handler implementations in socat before 1.7.3.0 and 2.0.0-b8 allow remote attackers to cause a denial of service (process freeze or crash).

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

3.93%Up 2.7 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

The signal handler implementations in socat before 1.7.3.0 and 2.0.0-b8 allow remote attackers to cause a denial of service (process freeze or crash).

Record: CVE-2015-1379
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-20
Updated: 2026-11-02

CVE List No score

The signal handler implementations in socat before 1.7.3.0 and 2.0.0-b8 allow remote attackers to cause a denial of service (process freeze or crash).

Record: CVE-2015-1379
Updated: 2026-11-02

EUVDEUVD-2015-1516 No score

The signal handler implementations in socat before 1.7.3.0 and 2.0.0-b8 allow remote attackers to cause a denial of service (process freeze or crash).

Record: EUVD-2015-1516
Updated: 2026-11-03

GitHub AdvisoriesGHSA-mhm8-j49g-j7wp 7.5

The signal handler implementations in socat before 1.7.3.0 and 2.0.0-b8 allow remote attackers to...

The signal handler implementations in socat before 1.7.3.0 and 2.0.0-b8 allow remote attackers to cause a denial of service (process freeze or crash).

Record: GHSA-mhm8-j49g-j7wp
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-20
Updated: 2026-11-02

OSV 7.5

The signal handler implementations in socat before 1.7.3.0 and 2.0.0-b8 allow remote attackers to cause a denial of service (process freeze or crash).

Record: CVE-2015-1379
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2015-1379 7.5

The signal handler implementations in socat before 1.7.3.0 and 2.0.0-b8 allow remote attackers to cause a denial of service (process freeze or crash).

Record: DEBIAN-CVE-2015-1379
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2015-1379 7.5

The signal handler implementations in socat before 1.7.3.0 and 2.0.0-b8 allow remote attackers to cause a denial of service (process freeze or crash).

Record: UBUNTU-CVE-2015-1379
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVMGASA-2015-0144 No score

Updated socat packages fix CVE-2015-1379

Updated socat package fixes security vulnerability:

In socat before 2.0.0-b8, signal handler implementations are not async-signal-safe and can cause crash or freeze of socat processes. Mostly this issue occurs when socat is in listening mode with fork option and a couple of child processes terminate at the same time (CVE-2015-1379).

Record: MGASA-2015-0144
Updated: 2026-11-02

OSVSUSE-SU-2025:0726-1 No score

Security update for socat

This update for socat fixes the following issues:

CVE-2015-1379: lack of async-signal-safe signal handlers can lead to crashes or freezing of socat processes (bsc#922903).

Record: SUSE-SU-2025:0726-1
Updated: 2026-11-02

Affected products

dest-unreach socat

Affected packages

Affected packages
Package	Affected	Fixed
`socat` Debian:12	before 1.7.2.4-2	1.7.2.4-2
`socat` Debian:13	before 1.7.2.4-2	1.7.2.4-2
`socat` Debian:14	before 1.7.2.4-2	1.7.2.4-2
`socat` Mageia:4	before 2.0.0-0.b8.1.mga4	2.0.0-0.b8.1.mga4
`socat` SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5	before 1.7.2.4-4.6.1	1.7.2.4-4.6.1
`socat` Ubuntu:Pro:14.04:LTS	before 1.7.2.3-1ubuntu0.1~esm1, plus listed versions 1.7.1.3-1.5ubuntu11.7.2.2-11.7.2.3-1	1.7.2.3-1ubuntu0.1~esm1

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2015-1379 is a high vulnerability (CVSS 7.5) in Dest-unreach Socat, published April 15, 2015. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.93%, the 90th percentile. Fixed in socat 1.7.2.4-2.

References

Show 9 moreShow less