CVE-2021-3578 is a critical vulnerability affecting mbsync versions prior to v1.3.6 and v1.4.2, impacting various Debian and Fedora distributions of isync. The flaw, an unchecked pointer cast, allows a malicious or compromised server to write arbitrary integer values beyond a heap-allocated structure via an unexpected APPENDUID response. This vulnerability carries a high CVSS score of 7.8, indicating a low attack complexity and the potential for remote code execution, leading to high impacts on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.3.6CPE matchmatch criteria | cpe:2.3:a:isync_project:isync:*:*:*:*:*:*:*:* | ||
1.4.0CPE matchmatch criteria | cpe:2.3:a:isync_project:isync:1.4.0:*:*:*:*:*:*:* | ||
1.4.1CPE matchmatch criteria | cpe:2.3:a:isync_project:isync:1.4.1:*:*:*:*:*:*:* | ||
33CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | ||
34CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.