Description** DISPUTED ** lib/crypto/c_src/crypto_drv.c in erlang does not properly check the return value from the OpenSSL DSA_do_verify function, which might allow remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077. NOTE: a package maintainer disputes this issue, reporting that there is a proper check within the only code that uses the applicable part of crypto_drv.c, and thus "this report is invalid."
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)
Debian Bugs511520

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
erlang (PTS)wheezy1:15.b.1-dfsg-4+deb7u1vulnerable
wheezy (security)1:15.b.1-dfsg-4+deb7u2vulnerable
jessie (security)1:17.3-dfsg-4+deb8u2vulnerable
stretch (security), stretch1:19.2.1+dfsg-2+deb9u1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


the return value is passed to the caller (lib/crypto/src/crypto.erl) which
only return success in case of DSA_do_verify returning 1 and failure otherwise
this is likely to be rejected

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