CVE-2021-3657
Mbsync IMAP Buffer Overflow Remote Code Execution Vulnerability
Description
A flaw was found in mbsync versions prior to 1.4.4. Due to inadequate handling of extremely large (>=2GiB) IMAP literals, malicious or compromised IMAP servers, and hypothetically even external email senders, could cause several different buffer overflows, which could conceivably be exploited for remote code execution.
INFO
Published Date :
Feb. 18, 2022, 6:15 p.m.
Last Modified :
Nov. 21, 2024, 6:22 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2021-3657
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.
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-2021-3657.
| URL | Resource |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2028932 | Issue Tracking Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/07/msg00001.html | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202208-15 | Third Party Advisory |
| https://www.openwall.com/lists/oss-security/2021/12/03/1 | Mailing List Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2028932 | Issue Tracking Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/07/msg00001.html | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202208-15 | Third Party Advisory |
| https://www.openwall.com/lists/oss-security/2021/12/03/1 | Mailing List 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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-3657 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-3657 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://bugzilla.redhat.com/show_bug.cgi?id=2028932 Added Reference https://lists.debian.org/debian-lts-announce/2022/07/msg00001.html Added Reference https://security.gentoo.org/glsa/202208-15 Added Reference https://www.openwall.com/lists/oss-security/2021/12/03/1 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Source Update by [email protected]
Dec. 21, 2022
Action Type Old Value New Value Changed CVE Elastic Fedora Project -
Modified Analysis by [email protected]
Oct. 26, 2022
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/07/msg00001.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/07/msg00001.html Mailing List, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/202208-15 No Types Assigned https://security.gentoo.org/glsa/202208-15 Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Aug. 11, 2022
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202208-15 [No Types Assigned] -
CVE Modified by [email protected]
Jul. 01, 2022
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2022/07/msg00001.html [No Types Assigned] -
Initial Analysis by [email protected]
Mar. 03, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=2028932 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=2028932 Issue Tracking, Third Party Advisory Changed Reference Type https://www.openwall.com/lists/oss-security/2021/12/03/1 No Types Assigned https://www.openwall.com/lists/oss-security/2021/12/03/1 Mailing List, Third Party Advisory Added CWE NIST CWE-119 Added CPE Configuration OR *cpe:2.3:a:isync_project:isync:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.4 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-3657 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-2021-3657
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.70 }} 0.68%
score
0.87426
percentile