Vulnerability · Published Feb 24, 2020 · Assigned by mitre
CVE-2020-9366
Critical 9.8
In plain English
A critical-severity security flaw in the screen package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.7% (higher than 86% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)2.7%top 14.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | screen | 4.8.0-r0 | ALPINE-CVE-2020-9366 |
| Alpine:v3.21 | screen | 4.8.0-r0 | ALPINE-CVE-2020-9366 |
| Alpine:v3.22 | screen | 4.8.0-r0 | ALPINE-CVE-2020-9366 |
| Alpine:v3.23 | screen | 4.8.0-r0 | ALPINE-CVE-2020-9366 |
| Alpine:v3.24 | screen | 4.8.0-r0 | ALPINE-CVE-2020-9366 |
| Debian:12 | screen | 4.8.0-1 | DEBIAN-CVE-2020-9366 |
| Debian:13 | screen | 4.8.0-1 | DEBIAN-CVE-2020-9366 |
| Debian:14 | screen | 4.8.0-1 | DEBIAN-CVE-2020-9366 |
Affected products (as reported)
References
- https://www.openwall.com/lists/oss-security/2020/02/06/3 x_refsource_MISC
- https://lists.gnu.org/archive/html/screen-devel/2020-02/msg00007.html x_refsource_MISC
- [oss-security] 20200225 Re: Re: GNU screen "out of bounds access when setting w_xtermosc after OSC 49" mailing-list, x_refsource_MLIST
- GLSA-202003-62 vendor-advisory, x_refsource_GENTOO