| Name | CVE-2017-6891 |
| Description | Two errors in the "asn1_find_node()" function (lib/parser_aux.c) within GnuTLS libtasn1 version 4.10 can be exploited to cause a stacked-based buffer overflow by tricking a user into processing a specially crafted assignments file via the e.g. asn1Coding utility. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-950-1, DSA-3861-1 |
| Debian Bugs | 863186 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libtasn1-6 (PTS) | jessie, jessie (lts) | 4.2-3+deb8u5 | fixed |
| stretch (security) | 4.10-1.1+deb9u1 | fixed |
| stretch (lts), stretch | 4.10-1.1+deb9u2 | fixed |
| buster (security), buster, buster (lts) | 4.13-3+deb10u1 | fixed |
| bullseye | 4.16.0-2+deb11u1 | fixed |
| bookworm | 4.19.0-2 | fixed |
| sid, trixie | 4.19.0-3 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://secuniaresearch.flexerasoftware.com/secunia_research/2017-11/
https://gitlab.com/gnutls/libtasn1/commit/5520704d075802df25ce4ffccc010ba1641bd484