CVE-2021-3657
published 2022-02-18CVE-2021-3657: 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…
critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
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.
Affected
10 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | isync | < isync 1.4.4-1 (bookworm) | isync 1.4.4-1 (bookworm) |
| fedoraproject | fedora | — | — |
| isync_project | isync | < 1.4.4 | 1.4.4 |
| isync_project | isync | — | — |
| isync_project | isync | >= 0 < 1.3.0-2.2+deb11u1 | 1.3.0-2.2+deb11u1 |
| isync_project | isync | >= 0 < 1.4.4-1 | 1.4.4-1 |
| isync_project | isync | >= 0 < 1.4.4-1 | 1.4.4-1 |
| isync_project | isync | >= 0 < 1.4.4-1 | 1.4.4-1 |
| redhat | enterprise_linux | — | — |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
osv9.8CRITICAL
GHSA
GHSA-gq8r-4g7c-69vw: A flaw was found in mbsync versions prior to 1
ghsa_unreviewed·2022-02-19
CVE-2021-3657 [CRITICAL] CWE-119 GHSA-gq8r-4g7c-69vw: A flaw was found in mbsync versions prior to 1
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.
OSV
CVE-2021-3657: A flaw was found in mbsync versions prior to 1
osv·2022-02-18·CVSS 9.8
CVE-2021-3657 [CRITICAL] CVE-2021-3657: A flaw was found in mbsync versions prior to 1
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.
Debian
CVE-2021-3657: isync - A flaw was found in mbsync versions prior to 1.4.4. Due to inadequate handling o...
vendor_debian·2021·CVSS 9.8
CVE-2021-3657 [CRITICAL] CVE-2021-3657: isync - A flaw was found in mbsync versions prior to 1.4.4. Due to inadequate handling o...
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.
Scope: local
bookworm: resolved (fixed in 1.4.4-1)
bullseye: resolved (fixed in 1.3.0-2.2+deb11u1)
forky: resolved (fixed in 1.4.4-1)
sid: resolved (fixed in 1.4.4-1)
trixie: resolved (fixed in 1.4.4-1)
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.redhat.com/show_bug.cgi?id=2028932https://lists.debian.org/debian-lts-announce/2022/07/msg00001.htmlhttps://security.gentoo.org/glsa/202208-15https://www.openwall.com/lists/oss-security/2021/12/03/1https://bugzilla.redhat.com/show_bug.cgi?id=2028932https://lists.debian.org/debian-lts-announce/2022/07/msg00001.htmlhttps://security.gentoo.org/glsa/202208-15https://www.openwall.com/lists/oss-security/2021/12/03/1
2022-02-18
Published