Security Information / 2012 / Security Information -- DSA-2440-1 libtasn1-3

Debian Security Advisory

DSA-2440-1 libtasn1-3 -- missing bounds check

Date Reported:

24 Mar 2012

Affected Packages:

libtasn1-3

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2012-1569.

More information:

Matthew Hall discovered that many callers of the asn1_get_length_der function did not check the result against the overall buffer length before processing it further. This could result in out-of-bounds memory accesses and application crashes. Applications using GNUTLS are exposed to this issue.

For the stable distribution (squeeze), this problem has been fixed in version 2.7-1+squeeze+1.

For the unstable distribution (sid), this problem has been fixed in version 2.12-1.

We recommend that you upgrade your libtasn1-3 packages.