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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Flexera Software | GnuTLS libtasn1 | 4.10. Other versions may also be affected. | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libtasn1-6 | 4.10-1.1 | — |
| Debian 13 | libtasn1-6 | 4.10-1.1 | — |
| Debian 12 | libtasn1-6 | 4.10-1.1 | — |
| Debian 8 | libtasn1-6 | 4.2-3+deb8u3 | DSA-3861-1 |
| Debian 7 | libtasn1-3 | 2.13-2+deb7u4 | DLA-950-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | libtasn1-6 | 4.7-3ubuntu0.16.04.2 | USN-3309-1 |
| Ubuntu 14.04 LTS | libtasn1-6 | 3.4-3ubuntu0.5 | USN-3309-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | libtasn1 | 4.9-3.10.1 | SUSE-SU-2019:1379-1 |
| SLES 12 SP3 | libtasn1 | 4.9-3.10.1 | SUSE-SU-2019:1379-1 |
| SLES 12 SP2 | libtasn1 | 3.7-13.7.1 | SUSE-SU-2022:3797-1 |
| SLES 11 SP4 | gnutls | 2.4.1-24.39.70.1 | SUSE-SU-2017:1886-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP4 | libtasn1 | 4.9-3.10.1 | SUSE-SU-2019:1379-1 |
| SLES for SAP 12 SP3 | libtasn1 | 4.9-3.10.1 | SUSE-SU-2019:1379-1 |
| SLES for SAP 11 SP4 | gnutls | 2.4.1-24.39.70.1 | SUSE-SU-2017:1886-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.6 | libtasn1 | 4.10-r1 | — |
| Alpine v3.5 | libtasn1 | 4.9-r1 | — |
| Alpine v3.4 | libtasn1 | 4.8-r1 | — |
| Alpine v3.3 | libtasn1 | 4.7-r2 | — |
Advisories 6
- USN-3309-1 libtasn1-6 vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-950-1 libtasn1-3 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3861-1 libtasn1-6 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2019:1379-1 Security update for libtasn1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3797-1 Security update for libtasn1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1886-1 Security update for gnutls SUSE / openSUSE Security Updates · Feb 4, 2026
References
- GLSA-201710-11 vendor-advisory
- DSA-3861 vendor-advisory
- https://secuniaresearch.flexerasoftware.com/advisories/76125/
- https://secuniaresearch.flexerasoftware.com/secunia_research/2017-11/
- http://git.savannah.gnu.org/gitweb/?p=libtasn1.git%3Ba=commit%3Bh=5520704d075802df25ce4ffccc010ba1641bd484
- 98641 vdb-entry
- 1038619 vdb-entry
- openSUSE-SU-2019:1510 vendor-advisory
- [bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8 mailing-list
- [bookkeeper-issues] 20210629 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8 mailing-list