CVE-2016-2109

NameCVE-2016-2109
DescriptionThe asn1_d2i_read_bio function in crypto/asn1/a_d2i_fp.c in the ASN.1 BIO implementation in OpenSSL before 1.0.1t and 1.0.2 before 1.0.2h allows remote attackers to cause a denial of service (memory consumption) via a short invalid encoding.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-456-1, DSA-3566-1
NVD severityhigh (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
openssl (PTS)wheezy1.0.1e-2+deb7u20vulnerable
wheezy (security)1.0.1t-1+deb7u2fixed
jessie (security), jessie1.0.1t-1+deb8u6fixed
stretch1.1.0f-3fixed
buster, sid1.1.0f-5fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
opensslsource(unstable)1.0.2h-1high
opensslsourcejessie1.0.1k-3+deb8u5highDSA-3566-1
opensslsourcewheezy1.0.1e-2+deb7u21highDLA-456-1

Notes

Fixed in master in https://git.openssl.org/?p=openssl.git;a=commit;h=c62981390d6cf9e3d612c489b8b77c2913b25807
https://www.openssl.org/news/secadv/20160503.txt

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