CVE-2021-20247 is a path traversal vulnerability in mbsync versions prior to v1.3.5 and v1.4.1, affecting Debian and Fedora Project distributions. A malicious or compromised IMAP server can exploit this flaw by sending specially crafted mailbox names containing '..' components, leading to unauthorized access to data outside the intended synchronization path. With a CVSS score of 7.4 (High), this vulnerability poses a significant risk to data confidentiality and integrity, though it requires high attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.3.5CPE matchmatch criteria | cpe:2.3:a:mbsync_project:mbsync:*:*:*:*:*:*:*:* | ||
>= 1.4.0, < 1.4.1CPE matchmatch criteria | cpe:2.3:a:mbsync_project:mbsync:*:*:*:*:*:*:*:* | ||
8.0CPE matchmatch criteria | cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:8.0:*:*:*:*:*:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | ||
32CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.