CVE-2021-3826
GNU Libiberty Heap Overflow Vulnerability
Description
Heap/stack buffer overflow in the dlang_lname function in d-demangle.c in libiberty allows attackers to potentially cause a denial of service (segmentation fault and crash) via a crafted mangled symbol.
INFO
Published Date :
Sept. 1, 2022, 9:15 p.m.
Last Modified :
Jan. 22, 2024, 3:01 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
Public PoC/Exploit Available at Github
CVE-2021-3826 has a 1 public PoC/Exploit
available at Github.
Go to the Public Exploits
tab to see the list.
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-2021-3826
.
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
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C# Dockerfile HTML JavaScript CSS
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-3826
vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-3826
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 [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Jan. 22, 2024
Action Type Old Value New Value Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Changed Reference Type https://gcc.gnu.org/git/?p=gcc.git%3Ba=commit%3Bh=5481040197402be6dfee265bd2ff5a4c88e30505 No Types Assigned https://gcc.gnu.org/git/?p=gcc.git%3Ba=commit%3Bh=5481040197402be6dfee265bd2ff5a4c88e30505 Broken Link Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4MYLS3VR4OPL5ECRWOR4ZHMGXUSCJFZY/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4MYLS3VR4OPL5ECRWOR4ZHMGXUSCJFZY/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6AKZ2DTS3ATVN5PANNVLKLE5OP4OF25Q/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6AKZ2DTS3ATVN5PANNVLKLE5OP4OF25Q/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7MTEHT3G6YKJ7F7MSGWYSI4UM3XBAYXZ/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7MTEHT3G6YKJ7F7MSGWYSI4UM3XBAYXZ/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AXFC74WRZ2Q7F2TSUKPYNIL7ZPBWYI6L/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AXFC74WRZ2Q7F2TSUKPYNIL7ZPBWYI6L/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H424YXGW7OKXS2NCAP35OP6Y4P4AW6VG/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H424YXGW7OKXS2NCAP35OP6Y4P4AW6VG/ Mailing List, Third Party Advisory -
CVE Modified by [email protected]
Feb. 12, 2023
Action Type Old Value New Value Removed Reference https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=5481040197402be6dfee265bd2ff5a4c88e30505 [Mailing List, Patch, Vendor Advisory] Removed Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/4MYLS3VR4OPL5ECRWOR4ZHMGXUSCJFZY/ [Mailing List, Third Party Advisory] Removed Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/6AKZ2DTS3ATVN5PANNVLKLE5OP4OF25Q/ [Mailing List, Third Party Advisory] Removed Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/7MTEHT3G6YKJ7F7MSGWYSI4UM3XBAYXZ/ [Mailing List, Third Party Advisory] Removed Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/AXFC74WRZ2Q7F2TSUKPYNIL7ZPBWYI6L/ [Mailing List, Third Party Advisory] Removed Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/H424YXGW7OKXS2NCAP35OP6Y4P4AW6VG/ [Mailing List, Third Party Advisory] Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AXFC74WRZ2Q7F2TSUKPYNIL7ZPBWYI6L/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4MYLS3VR4OPL5ECRWOR4ZHMGXUSCJFZY/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H424YXGW7OKXS2NCAP35OP6Y4P4AW6VG/ [No Types Assigned] Added Reference https://gcc.gnu.org/git/?p=gcc.git%3Ba=commit%3Bh=5481040197402be6dfee265bd2ff5a4c88e30505 [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7MTEHT3G6YKJ7F7MSGWYSI4UM3XBAYXZ/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6AKZ2DTS3ATVN5PANNVLKLE5OP4OF25Q/ [No Types Assigned] -
Modified Analysis by [email protected]
Dec. 12, 2022
Action Type Old Value New Value Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/4MYLS3VR4OPL5ECRWOR4ZHMGXUSCJFZY/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/4MYLS3VR4OPL5ECRWOR4ZHMGXUSCJFZY/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/6AKZ2DTS3ATVN5PANNVLKLE5OP4OF25Q/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/6AKZ2DTS3ATVN5PANNVLKLE5OP4OF25Q/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/7MTEHT3G6YKJ7F7MSGWYSI4UM3XBAYXZ/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/7MTEHT3G6YKJ7F7MSGWYSI4UM3XBAYXZ/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/H424YXGW7OKXS2NCAP35OP6Y4P4AW6VG/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/H424YXGW7OKXS2NCAP35OP6Y4P4AW6VG/ Mailing List, Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* OR *cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* -
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/7MTEHT3G6YKJ7F7MSGWYSI4UM3XBAYXZ/ [No Types Assigned] -
CVE Modified by [email protected]
Nov. 10, 2022
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/H424YXGW7OKXS2NCAP35OP6Y4P4AW6VG/ [No Types Assigned] -
CVE Modified by [email protected]
Nov. 07, 2022
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/6AKZ2DTS3ATVN5PANNVLKLE5OP4OF25Q/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/4MYLS3VR4OPL5ECRWOR4ZHMGXUSCJFZY/ [No Types Assigned] -
Modified Analysis by [email protected]
Sep. 29, 2022
Action Type Old Value New Value Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/AXFC74WRZ2Q7F2TSUKPYNIL7ZPBWYI6L/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/AXFC74WRZ2Q7F2TSUKPYNIL7ZPBWYI6L/ Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Sep. 08, 2022
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/AXFC74WRZ2Q7F2TSUKPYNIL7ZPBWYI6L/ [No Types Assigned] -
Initial Analysis by [email protected]
Sep. 07, 2022
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=5481040197402be6dfee265bd2ff5a4c88e30505 No Types Assigned https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=5481040197402be6dfee265bd2ff5a4c88e30505 Mailing List, Patch, Vendor Advisory Changed Reference Type https://gcc.gnu.org/pipermail/gcc-patches/2021-September/579987 No Types Assigned https://gcc.gnu.org/pipermail/gcc-patches/2021-September/579987 Mailing List, Patch, Vendor Advisory Added CWE NIST CWE-787 Added CPE Configuration OR *cpe:2.3:a:gnu:gcc:11.2:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-3826
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-2021-3826
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.32 }} 0.05%
score
0.70160
percentile