CVE-2021-46848

CRITICAL

GNU Libtasn1 <4.19.0 - Buffer Overflow

Title source: llm

Description

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

References (9)

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OGO7XST4EIJGX4B2ITZCYSWM24534BSU/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AV4SHDJF2XLB4CUPTBPQQ6CLGZ5LKXPZ/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V5LWOGF7QRMNFRUCZY6TDYQJVFI6MOQ2/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ECM2ELTVRYV4BZ5L5GMIRQE27RFHPAQ6/

[Mailing List, Third Party Advisory] https://lists.debian.org/debian-lts-announce/2023/01/msg00003.html

[Issue Tracking, Patch, Third Party Advisory] https://bugs.gentoo.org/866237

[Patch, Third Party Advisory] https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5

View Patch ZIP pw:eip

[Exploit, Issue Tracking, Third Party Advisory] https://gitlab.com/gnutls/libtasn1/-/issues/32

[Third Party Advisory] https://security.netapp.com/advisory/ntap-20221118-0006/

Scores

CVSS v3 9.1

EPSS 0.0063

EPSS Percentile 70.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-193

Status published

Products (5)

debian/debian_linux 10.0

fedoraproject/fedora 35

fedoraproject/fedora 36

fedoraproject/fedora 37

gnu/libtasn1 < 4.19.0

Published Oct 24, 2022

Tracked Since Feb 18, 2026