9.1
CRITICAL
CVE-2021-46848
"GNU Libtasn1 ASN1 Encode Buffer Overflow"
Description

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

INFO

Published Date :

Oct. 24, 2022, 2:15 p.m.

Last Modified :

Nov. 21, 2024, 6:34 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.2

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2021-46848 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-46848 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Fedoraproject fedora
1 Debian debian_linux
1 Gnu libtasn1
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-46848.

URL Resource
https://bugs.gentoo.org/866237 Issue Tracking Patch Third Party Advisory
https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5 Patch Third Party Advisory
https://gitlab.com/gnutls/libtasn1/-/issues/32 Exploit Issue Tracking Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00003.html Mailing List Third 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/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V5LWOGF7QRMNFRUCZY6TDYQJVFI6MOQ2/
https://security.netapp.com/advisory/ntap-20221118-0006/ Third Party Advisory
https://bugs.gentoo.org/866237 Issue Tracking Patch Third Party Advisory
https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5 Patch Third Party Advisory
https://gitlab.com/gnutls/libtasn1/-/issues/32 Exploit Issue Tracking Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00003.html Mailing List Third 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/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V5LWOGF7QRMNFRUCZY6TDYQJVFI6MOQ2/
https://security.netapp.com/advisory/ntap-20221118-0006/ Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

None

Dockerfile Roff Java

Updated: 2 months, 1 week ago
0 stars 0 fork 0 watcher
Born at : Oct. 7, 2024, 8:52 a.m. This repo has been linked 127 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-46848 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-46848 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://bugs.gentoo.org/866237
    Added Reference https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5
    Added Reference https://gitlab.com/gnutls/libtasn1/-/issues/32
    Added Reference https://lists.debian.org/debian-lts-announce/2023/01/msg00003.html
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AV4SHDJF2XLB4CUPTBPQQ6CLGZ5LKXPZ/
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ECM2ELTVRYV4BZ5L5GMIRQE27RFHPAQ6/
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OGO7XST4EIJGX4B2ITZCYSWM24534BSU/
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V5LWOGF7QRMNFRUCZY6TDYQJVFI6MOQ2/
    Added Reference https://security.netapp.com/advisory/ntap-20221118-0006/
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OGO7XST4EIJGX4B2ITZCYSWM24534BSU/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AV4SHDJF2XLB4CUPTBPQQ6CLGZ5LKXPZ/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V5LWOGF7QRMNFRUCZY6TDYQJVFI6MOQ2/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ECM2ELTVRYV4BZ5L5GMIRQE27RFHPAQ6/ [No types assigned]
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/AV4SHDJF2XLB4CUPTBPQQ6CLGZ5LKXPZ/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/OGO7XST4EIJGX4B2ITZCYSWM24534BSU/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/V5LWOGF7QRMNFRUCZY6TDYQJVFI6MOQ2/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/ECM2ELTVRYV4BZ5L5GMIRQE27RFHPAQ6/
  • CWE Remap by [email protected]

    Aug. 08, 2023

    Action Type Old Value New Value
    Changed CWE CWE-125 CWE-193
  • Modified Analysis by [email protected]

    Jan. 20, 2023

    Action Type Old Value New Value
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2023/01/msg00003.html No Types Assigned https://lists.debian.org/debian-lts-announce/2023/01/msg00003.html Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/AV4SHDJF2XLB4CUPTBPQQ6CLGZ5LKXPZ/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/AV4SHDJF2XLB4CUPTBPQQ6CLGZ5LKXPZ/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/ECM2ELTVRYV4BZ5L5GMIRQE27RFHPAQ6/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/ECM2ELTVRYV4BZ5L5GMIRQE27RFHPAQ6/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/OGO7XST4EIJGX4B2ITZCYSWM24534BSU/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/OGO7XST4EIJGX4B2ITZCYSWM24534BSU/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/V5LWOGF7QRMNFRUCZY6TDYQJVFI6MOQ2/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/V5LWOGF7QRMNFRUCZY6TDYQJVFI6MOQ2/ Mailing List, Third Party Advisory
    Changed Reference Type https://security.netapp.com/advisory/ntap-20221118-0006/ No Types Assigned https://security.netapp.com/advisory/ntap-20221118-0006/ Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jan. 09, 2023

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2023/01/msg00003.html [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 18, 2022

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/ECM2ELTVRYV4BZ5L5GMIRQE27RFHPAQ6/ [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 18, 2022

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20221118-0006/ [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/V5LWOGF7QRMNFRUCZY6TDYQJVFI6MOQ2/ [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 14, 2022

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/AV4SHDJF2XLB4CUPTBPQQ6CLGZ5LKXPZ/ [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/OGO7XST4EIJGX4B2ITZCYSWM24534BSU/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Oct. 24, 2022

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
    Changed Reference Type https://bugs.gentoo.org/866237 No Types Assigned https://bugs.gentoo.org/866237 Issue Tracking, Patch, Third Party Advisory
    Changed Reference Type https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5 No Types Assigned https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5 Patch, Third Party Advisory
    Changed Reference Type https://gitlab.com/gnutls/libtasn1/-/issues/32 No Types Assigned https://gitlab.com/gnutls/libtasn1/-/issues/32 Exploit, Issue Tracking, Third Party Advisory
    Added CWE NIST CWE-125
    Added CPE Configuration OR *cpe:2.3:a:gnu:libtasn1:*:*:*:*:*:*:*:* versions up to (excluding) 4.19.0
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-46848 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-46848 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.36 }} -0.03%

score

0.71829

percentile

CVSS31 - Vulnerability Scoring System
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