Vulnerability in Isync Project
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 heap-allocated structure by issuing an unexpected APPENDUID response. This could be plausibly exploited for remote code execution on the client.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (62.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Isync Project — versions 1.4.0, 1.4.1
- Debian Linux — versions 9.0
- Fedoraproject Fedora — versions 33, 34
- Isync — versions isync 1.3.6, isync 1.4.2
Weakness classification (CWE)
References
- www.openwall.com/lists/oss-security/2021/06/07/1 (mailing-list, Patch, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- bugzilla.redhat.com/show_bug.cgi (Not Applicable)
- github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/ (Not Applicable)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- www.openwall.com/lists/oss-security/2021/06/07/1 (Patch, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/07/msg00001.html (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202208-15 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3578?
- CVE-2021-3578 is a high-severity vulnerability in Isync Project, classified under Incorrect Type Conversion or Cast. CVSS score: 7.8/10. Published 2022-02-16.
- How severe is CVE-2021-3578?
- High severity. CVSS v3 base score is 7.8 out of 10.