Buffer overflow in GNU Screen
CVE-2020-9366
A buffer overflow was found in the way GNU Screen before 4.8.0 treated the special escape OSC 49. Specially crafted output, or a special program, could corrupt memory and crash Screen or possibly have unspecified other impact.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.027 (85.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.openwall.com/lists/oss-security/2020/02/06/3 (Patch, Mailing List, Release Notes)
- lists.gnu.org/archive/html/screen-devel/2020-02/msg00007.html (Patch, Mailing List, Release Notes, Vendor Advisory)
- www.openwall.com/lists/oss-security/2020/02/25/1 (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202003-62 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-9366?
- CVE-2020-9366 is a critical-severity vulnerability in GNU Screen, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2020-02-24.
- How severe is CVE-2020-9366?
- Critical severity. CVSS v3 base score is 9.8 out of 10.