High severity · published Feb 16, 2022
CVE-2021-3578
A flaw was found in mbsync before v1.3.6 and v1.4.2, where an unchecked pointer cast allows a malicious or compromised server to write an arbitrary integer value past the end of a…
7.8
CVSS
1%
EPSS
No
On KEV
Description
A flaw was found in mbsync before v1.3.6 and v1.4.2, where an unchecked pointer cast allows a malicious or compromised server to write an arbitrary integer value past the end of a heap-allocated structure by issuing an unexpected APPENDUID response. This could be plausibly exploited for remote code execution on the client.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 64% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0 · source: NVD
FE
Fedora · Fedoraproject
33; 34 · source: NVD
IS
Isync · Isync Project
before 1.3.6; 1.4.0; 1.4.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3578
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3578
Mailing List
http://www.openwall.com/lists/oss-security/2021/06/07/1
Not Applicable
https://bugzilla.redhat.com/show_bug.cgi?id=1961710
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1967397
Not Applicable
https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/
Mailing List
https://lists.debian.org/debian-lts-announce/2022/07/msg00001.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RPIDLIJKNRJHUVBCL7QGAPAAVPIHQGXK/
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