Veracode Vulnerability DatabaseVERACODE:25325Authentication Bypass
EPSS
Percentile
84.1%
openssl is vulnerable to authentication bypass. The vulnerability exists through an implementation bug the PA-RISC CRYPTO_memcmp function is effectively reduced to only comparing the least significant bit of each byte. This allows an attacker to forge messages that would be considered as authenticated in an amount of tries lower than that guaranteed by the security claims of the scheme. The module can only be compiled by the HP-UX assembler, so that only HP-UX PA-RISC targets are affected. Fixed in OpenSSL 1.1.0h (Affected 1.1.0-1.1.0g).
References
www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
www.securityfocus.com/bid/103517
www.securitytracker.com/id/1040576
git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=56d5a4bfcaf37fa420aef2bb881aa55e61cf5f2f
security.gentoo.org/glsa/201811-21
security.netapp.com/advisory/ntap-20180330-0002/
www.openssl.org/news/secadv/20180327.txt
www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
www.tenable.com/security/tns-2018-04
www.tenable.com/security/tns-2018-06
www.tenable.com/security/tns-2018-07
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