CVE-2021-46848

Publication date 25 October 2022

Last updated 24 July 2024


Ubuntu priority

Cvss 3 Severity Score

9.1 · Critical

Score breakdown

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

Read the notes from the security team

Status

Package Ubuntu Release Status
libtasn1-6 24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored end of life, was needs-triage
22.10 kinetic Ignored end of life, was needs-triage
22.04 LTS jammy
Needs evaluation
20.04 LTS focal
Needs evaluation
18.04 LTS bionic
Needs evaluation
16.04 LTS xenial
14.04 LTS trusty Ignored end of ESM support, was needs-triage

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Notes


mdeslaur

out of bounds read in API when using invalid value, not likely to be exploitable in any way

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
libtasn1-6

Severity score breakdown

Parameter Value
Base score 9.1 · Critical
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-5707-1
    • Libtasn1 vulnerability
    • 31 October 2022

Other references