Back Linuxsecurity Ubuntu 20.04 LTS Libtasn1 Important ASN.1 DoS Fix USN-7954
A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS Summary: Several security issues were fixed in Libtasn1. Software Description: - 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
A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS Summary: Several security issues were fixed in Libtasn1. Software Description: - 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
The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS libtasn1-6 4.16.0-2ubuntu0.1+esm1 Available with Ubuntu Pro Ubuntu 18.04 LTS libtasn1-6 4.13-2ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 16.04 LTS libtasn1-6 4.7-3ubuntu0.16.04.3+esm4 Available with Ubuntu Pro Ubuntu 14.04 LTS libtasn1-6 3.4-3ubuntu0.6+esm1 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes.
The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS libtasn1-6 4.16.0-2ubuntu0.1+esm1 Available with Ubuntu Pro Ubuntu 18.04 LTS libtasn1-6 4.13-2ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 16.04 LTS libtasn1-6 4.7-3ubuntu0.16.04.3+esm4 Available with Ubuntu Pro Ubuntu 14.04 LTS libtasn1-6 3.4-3ubuntu0.6+esm1 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes.
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