Description
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.
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 | 4.14-2 | — |
| Debian 13 | libtasn1-6 | 4.14-2 | — |
| Debian 12 | libtasn1-6 | 4.14-2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | libtasn1-6 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | libtasn1-6 | 4.7-3ubuntu0.16.04.3+esm2 | USN-5352-1 |
| Ubuntu Pro 14.04 LTS | libtasn1-6 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | libtasn1 | 4.13-4.5.1 | SUSE-SU-2019:1372-2 |
| SLES 15 | libtasn1 | 4.13-4.5.1 | SUSE-SU-2019:1372-1 |
| 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 |
Show 2 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 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libtasn1 | 4.17.0-1.2 | openSUSE-SU-2024:11001-1 |
| openSUSE Leap 15.1 | libtasn1 | 4.13-lp151.4.3.1 | openSUSE-SU-2019:1498-1 |
| openSUSE Leap 15.0 | libtasn1 | 4.13-lp151.4.3.1 | openSUSE-SU-2019:1498-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | libtasn1 | 4.14-r0 | — |
| Alpine v3.23 | libtasn1 | 4.14-r0 | — |
| Alpine v3.22 | libtasn1 | 4.14-r0 | — |
| Alpine v3.21 | libtasn1 | 4.14-r0 | — |
| Alpine v3.20 | libtasn1 | 4.14-r0 | — |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | libtasn1 | 4.14-r0 | — |
| Alpine v3.18 | libtasn1 | 4.14-r0 | — |
| Alpine v3.17 | libtasn1 | 4.14-r0 | — |
| Alpine v3.16 | libtasn1 | 4.14-r0 | — |
| Alpine v3.15 | libtasn1 | 4.14-r0 | — |
| Alpine v3.14 | libtasn1 | 4.14-r0 | — |
| Alpine v3.13 | libtasn1 | 4.14-r0 | — |
| Alpine v3.12 | libtasn1 | 4.14-r0 | — |
| Alpine v3.11 | libtasn1 | 4.14-r0 | — |
| Alpine v3.10 | libtasn1 | 4.14-r0 | — |
| Alpine v3.9 | libtasn1 | 4.14-r0 | — |
| Alpine v3.8 | libtasn1 | 4.14-r0 | — |
| Alpine v3.7 | libtasn1 | 4.12-r4 | — |
Advisories 7
- USN-5352-1 libtasn1-6 vulnerability Ubuntu Security Notices (USN) · Jun 25, 2026
- openSUSE-SU-2019:1498-1 Security update for libtasn1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1372-2 Security update for libtasn1 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11001-1 libtasn1-6-32bit-4.17.0-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1379-1 Security update for libtasn1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1372-1 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
References
- https://gitlab.com/gnutls/libtasn1/issues/4
- 105151 vdb-entry
- openSUSE-SU-2019:1498 vendor-advisory
- openSUSE-SU-2019:1510 vendor-advisory
- [mina-dev] 20210225 [jira] [Created] (FTPSERVER-500) Security vulnerability in common/lib/log4j-1.2.17.jar mailing-list