CVE-2021-46848

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

CVE

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

CRITICAL · CVSS 9.1 EPSS 0.00628

Act now

Public exploit or PoC is available
SSVC automatable: yes - attacks can be scripted at scale
CVSS base score ≥ 7.0

Sigma rules0 YARA rules0

⬡

Weakness Classification

CWE-193Off-by-one Error

▤

Affected Products & Versions

gnu libtasn1< 4.19.0
fedoraproject fedoraall versions
debian linuxall versions

⚠

Public Exploits & PoCs

pocgitlab.com · issues/32gitlab.com

▣

Scoring & Timeline

9.1

CRITICAL · CVSS v3.1 · cve@mitre.org

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD24 Oct 2022 · 02:15 PM

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

SSVC triage · cisa-vulnrichment

Exploitation

none

Automatable

yes

Technical impact

partial

SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.

⚑

Vendor Advisories

usnUSN-7954-2
usnUSN-7954-1
siemens-csafSSA-398330
usnUSN-5707-1
suse-csafSUSE-SU-2022:3817-1
Show all 13 vendor advisoriessuse-csafSUSE-SU-2022:3797-1
suse-csafSUSE-SU-2022:3784-1
msrcCVE-2021-46848
rhsaRHSA-2024:0427Moderate
rhsaRHSA-2023:0116Moderate
rhsaRHSA-2023:0343Moderate
oracle-cpuoracle-cpu-Oracle-Communications-Cloud-Native-Core-Network-Repository-Function-14118--CVE-2021-46848
cisa-csafcisa-csaf-csaf_files-OT-white-2023-icsa-23-348-10

🔗

References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

https://bugs.gentoo.org/866237Issue TrackingPatchThird Party Advisory

https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5PatchThird Party Advisory

https://lists.debian.org/debian-lts-announce/2023/01/msg00003.htmlMailing ListThird Party Advisory

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/

Show all 8 references

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V5LWOGF7QRMNFRUCZY6TDYQJVFI6MOQ2/

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

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