Bug#906768: libtasn-1: CVE-2018-1000654

[Salvatore Bonaccorso]

Source: libtasn1-6
Version: 4.13-3
Severity: important
Tags: security upstream
Forwarded: https://gitlab.com/gnutls/libtasn1/issues/4

Hi,

The following vulnerability was published for libtasn1-6.

CVE-2018-1000654[0]:
| GNU Libtasn1-4.13 libtasn1-4.13 version libtasn1-4.13, libtasn1-4.12
| contains a DoS, specifically CPU usage will reach 100% when running
| asn1Paser against the POC due to an issue in
| _asn1_expand_object_id(p_tree), after a long time, the program will be
| killed. This attack appears to be exploitable via parsing a crafted
| file.

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2018-1000654
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000654
[1] https://gitlab.com/gnutls/libtasn1/issues/4

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore