Buffer overflow in Opengroup Unix
CVE-2019-9895
In PuTTY versions before 0.71 on Unix, a remotely triggerable buffer overflow exists in any kind of server-to-client forwarding.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.025 (84.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.025 · change: -0.001
Affected products
- Opengroup Unix
- Putty
- Fedoraproject Fedora — versions 28, 29
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.chiark.greenend.org.uk/~sgtatham/putty/changes.html (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)
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00004.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00020.html (vendor-advisory)
- seclists.org/bugtraq/2019/Apr/6 (mailing-list)
- security.netapp.com/advisory/ntap-20190404-0001/
- www.debian.org/security/2019/dsa-4423 (vendor-advisory)
Frequently asked questions
- What is CVE-2019-9895?
- CVE-2019-9895 is a critical-severity vulnerability in Opengroup Unix, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2019-03-21.
- How severe is CVE-2019-9895?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2019-9895 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.