What’s Vulnerable › Vulnerabilities

CVE-2021-46848

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-10-24 · updated 2026-10-14
• Weakness: CWE-193

Description

GNU Libtasn1 before 4.19.0 has an ETYPE_OK off-by-one array size check that affects asn1_encode_simple_der.

Affected products

• Debian Linux: 10.0
• Fedoraproject Fedora: 35, 36, 37
• GnuTLS libtasn1: before 4.19.0 — fixed in 4.19.0

How to fix

Upgrade to a fixed version: GnuTLS libtasn1 4.19.0. Check the vendor advisory for mitigations.

References

• https://bugs.gentoo.org/866237
• https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5
• https://gitlab.com/gnutls/libtasn1/-/issues/32
• https://lists.debian.org/debian-lts-announce/2023/01/msg00003.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AV4SHDJF2XLB4CUPTBPQQ6CLGZ5LKXPZ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ECM2ELTVRYV4BZ5L5GMIRQE27RFHPAQ6/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OGO7XST4EIJGX4B2ITZCYSWM24534BSU/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V5LWOGF7QRMNFRUCZY6TDYQJVFI6MOQ2/
• https://security.netapp.com/advisory/ntap-20221118-0006/
• https://bugs.gentoo.org/866237
• https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5
• https://gitlab.com/gnutls/libtasn1/-/issues/32

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