CVE-2021-3657: Buffer Overflow
First published: Fri Dec 03 2021(Updated: )
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. Reference: <a href="https://www.openwall.com/lists/oss-security/2021/12/03/1">https://www.openwall.com/lists/oss-security/2021/12/03/1</a>
Credit: patrick@puiterwijk.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Isync Project Isync | <1.4.4 | |
| Fedoraproject Fedora | =35 | |
| Redhat Enterprise Linux | =7.0 | |
| Debian Debian Linux | =9.0 | |
| redhat/isync | <1.4.4 | 1.4.4 |
| debian/isync | 1.3.0-2.2+deb11u1 1.4.4-5 |
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Reference Links
- https://www.openwall.com/lists/oss-security/2021/12/03/1
- https://security-tracker.debian.org/tracker/CVE-2021-3657
- https://bugzilla.redhat.com/show_bug.cgi?id=2028932
- https://lists.debian.org/debian-lts-announce/2022/07/msg00001.html
- https://security.gentoo.org/glsa/202208-15
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2028934
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2028933
- collector/nvd-index
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/weakness
- agent/last-modified-date
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2021-3657
- agent/software-canonical-lookup
- agent/references
- agent/severity
- agent/description
- agent/first-publish-date
- agent/softwarecombine
- agent/event
- agent/tags
- collector/security-tracker-debian
- source/Debian
- vendor/isync project
- canonical/isync project isync
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/35
- vendor/redhat
- canonical/redhat enterprise linux
- version/redhat enterprise linux/7.0
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- package-manager/redhat
- package-manager/debian