Input validation error in OpenSSL - CVE-2015-1794
Published: June 20, 2023
Vulnerability identifier: #VU77554
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2015-1794
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists in the ssl3_get_key_exchange() function in ssl/s3_clnt.c in OpenSSL. A remote attacker can pass specially crafted zero p value in an anonymous Diffie-Hellman (DH) ServerKeyExchange message to the application and perform a denial of service (DoS) attack.
Affected software
OpenSSL
SnapDrive for Unix
SnapDrive for Windows
Slackware Linux
openssl
openssl-solibs
FOS Firmware
SnapDrive for Unix
SnapDrive for Windows
Slackware Linux
openssl
openssl-solibs
FOS Firmware
How to mitigate CVE-2015-1794
Install updates from vendor's website.
OpenSSL - update to 1.0.2e
SnapDrive for Unix - update to 5.3.1
SnapDrive for Windows - update to 7.1.4
openssl - addressed in versions 0.9.8zh, 1.0.1q
openssl-solibs - addressed in versions 0.9.8zh, 1.0.1q
FOS Firmware - update to 7.4.1c
SnapDrive for Unix - update to 5.3.1
SnapDrive for Windows - update to 7.1.4
openssl - addressed in versions 0.9.8zh, 1.0.1q
openssl-solibs - addressed in versions 0.9.8zh, 1.0.1q
FOS Firmware - update to 7.4.1c
External References
- http://openssl.org/news/secadv/20151203.txt
- http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html
- http://fortiguard.com/advisory/openssl-advisory-december-2015
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151204-openssl
- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2015&m=slackware-security.754583
- http://www.ubuntu.com/usn/USN-2830-1
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05398322
- http://www.securitytracker.com/id/1034294
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=ada57746b6b80beae73111fe1291bf8dd89af91c