Packages
- libtasn1-6 - Library to manage ASN.1 structures
Details
USN-7954-1 fixed vulnerabilities in Libtasn1. This update provides the
corresponding updates for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu
18.04 LTS, and Ubuntu 20.04 LTS. CVE-2021-46848 only affected Ubuntu
14.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS.
Original advisory details:
It was discovered that Libtasn1 incorrectly handled decoding ASN.1
content. An attacker could possibly use this issue to cause Libtasn1 to
crash, resulting in a denial of service. (CVE-2025-13151)
It was discovered that Libtasn1 incorrectly handled encoding ASN.1
content. An attacker could possibly use this issue to cause Libtasn1 to
crash, resulting in a denial of service. This issue only affected
Ubuntu 22.04 LTS. (CVE-2021-46848)
USN-7954-1 fixed vulnerabilities in Libtasn1. This update provides the
corresponding updates for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu
18.04 LTS, and Ubuntu 20.04 LTS. CVE-2021-46848 only affected Ubuntu
14.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS.
Original advisory details:
It was discovered that Libtasn1 incorrectly handled decoding ASN.1
content. An attacker could possibly use this issue to cause Libtasn1 to
crash, resulting in a denial of service. (CVE-2025-13151)
It was discovered that Libtasn1 incorrectly handled encoding ASN.1
content. An attacker could possibly use this issue to cause Libtasn1 to
crash, resulting in a denial of service. This issue only affected
Ubuntu 22.04 LTS. (CVE-2021-46848)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 20.04 LTS focal | libtasn1-6 – 4.16.0-2ubuntu0.1+esm1 | ||
| 18.04 LTS bionic | libtasn1-6 – 4.13-2ubuntu0.1~esm1 | ||
| 16.04 LTS xenial | libtasn1-6 – 4.7-3ubuntu0.16.04.3+esm4 | ||
| 14.04 LTS trusty | libtasn1-6 – 3.4-3ubuntu0.6+esm1 | ||
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