#VU70414 Buffer overflow in OpenSSL - CVE-2015-0292

Vulnerability identifier: #VU70414

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2015-0292

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenSSL
Server applications / Encryption software

Vendor: OpenSSL Software Foundation

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to a boundary error in the EVP_DecodeUpdate function in crypto/evp/encode.c in the base64-decoding implementation. A remote attacker can trigger memory corruption and perform a denial of service (DoS) attack or possibly have unspecified other impact.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

OpenSSL: 0.9.8y - 0.9.8p, 1.0.0c - 1.0.0, 1.0.1g - 1.0.1

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External links
https://www.openssl.org/news/secadv_20150319.txt
https://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=d0666f289ac013094bbbf547bfbcd616199b7d2d
https://rt.openssl.org/Ticket/Display.html?id=2608&user=guest&pass=guest
https://bugzilla.redhat.com/show_bug.cgi?id=1202395
https://lists.fedoraproject.org/pipermail/package-announce/2015-March/152844.html
https://lists.fedoraproject.org/pipermail/package-announce/2015-March/152733.html
https://lists.fedoraproject.org/pipermail/package-announce/2015-March/152734.html
https://www.debian.org/security/2015/dsa-3197
https://www.ubuntu.com/usn/USN-2537-1
https://www.securitytracker.com/id/1031929
https://rhn.redhat.com/errata/RHSA-2015-0716.html
https://lists.opensuse.org/opensuse-security-announce/2015-03/msg00027.html
https://rhn.redhat.com/errata/RHSA-2015-0752.html
https://rhn.redhat.com/errata/RHSA-2015-0715.html
https://rhn.redhat.com/errata/RHSA-2015-0800.html
https://access.redhat.com/articles/1384453
https://www.securityfocus.com/bid/73228
https://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
https://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
https://bto.bluecoat.com/security-advisory/sa92
https://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
https://marc.info/?l=bugtraq&m=144050297101809&w=2
https://marc.info/?l=bugtraq&m=143213830203296&w=2
https://marc.info/?l=bugtraq&m=143748090628601&w=2
https://marc.info/?l=bugtraq&m=144050155601375&w=2
https://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
https://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
https://www.fortiguard.com/advisory/2015-03-24-openssl-vulnerabilities-march-2015
https://security.gentoo.org/glsa/201503-11
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10680
https://kc.mcafee.com/corporate/index?page=content&id=SB10110
https://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
https://support.citrix.com/article/CTX216642

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.