#VU82375 Memory leak in OpenSSL - CVE-2016-0798
Vulnerability identifier: #VU82375
Vulnerability risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID:
CWE-ID:
CWE-401
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 perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the SRP_VBASE_get_by_user implementation in OpenSSL. A remote attacker can perform a denial of service attack (memory consumption) by providing an invalid username in a connection attempt, related to apps/s_server.c and crypto/srp/srp_vfy.c
Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability..
Vulnerable software versions
OpenSSL: 1.0.0t - 1.0.0p, 1.0.1i - 1.0.1p
External links
https://openssl.org/news/secadv/20160301.txt
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40168
https://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
https://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
https://www.securityfocus.com/bid/91787
https://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
https://www.securityfocus.com/bid/83705
https://www.openssl.org/news/secadv/20160301.txt
https://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html
https://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html
https://lists.opensuse.org/opensuse-security-announce/2016-03/msg00010.html
https://lists.opensuse.org/opensuse-security-announce/2016-03/msg00005.html
https://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.html
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160302-openssl
https://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html
https://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html
https://www.ubuntu.com/usn/USN-2914-1
https://www.debian.org/security/2016/dsa-3500
https://security.gentoo.org/glsa/201603-15
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03741en_us
https://www.securitytracker.com/id/1035133
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:12.openssl.asc
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=259b664f950c2ba66fbf4b0fe5281327904ead21
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.
