CVE-2015-0291

medium

Description

The sigalgs implementation in t1_lib.c in OpenSSL 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) by using an invalid signature_algorithms extension in the ClientHello message during a renegotiation.

References

Advisories
More

https://security.gentoo.org/glsa/201503-11

https://kc.mcafee.com/corporate/index?page=content&id=SB10110

https://bto.bluecoat.com/security-advisory/sa92

http://www.securitytracker.com/id/1031929

http://www.securityfocus.com/bid/73235

http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html

http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html

http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html

http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html

http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html

http://www.fortiguard.com/advisory/2015-03-24-openssl-vulnerabilities-march-2015

http://marc.info/?l=bugtraq&m=144050297101809&w=2

http://marc.info/?l=bugtraq&m=144050155601375&w=2

http://marc.info/?l=bugtraq&m=143748090628601&w=2

https://www.openssl.org/news/secadv_20150319.txt

https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=76343947ada960b6269090638f5391068daee88d

https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

https://bugzilla.redhat.com/show_bug.cgi?id=1202338

Details

Source: Mitre, NVD

Published: 2015-03-19

Updated: 2025-04-12

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Severity: Medium

EPSS

EPSS: 0.14687