CVE-2021-26937
Published: 9 February 2021
encoding.c in GNU Screen through 4.8.0 allows remote attackers to cause a denial of service (invalid write access and application crash) or possibly have unspecified other impact via a crafted UTF-8 character sequence.
Notes
Author | Note |
---|---|
mdeslaur | as of 2021-02-18, proposed patch on mailing list not yet commited to upstream repo, but has been released by Debian |
Priority
Status
Package | Release | Status |
---|---|---|
screen Launchpad, Ubuntu, Debian |
bionic |
Released
(4.6.2-1ubuntu1.1)
|
focal |
Released
(4.8.0-1ubuntu0.1)
|
|
groovy |
Released
(4.8.0-2ubuntu0.1)
|
|
hirsute |
Not vulnerable
(4.8.0-5build2)
|
|
trusty |
Released
(4.1.0~20120320gitdb59704-9ubuntu0.1~esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
xenial |
Released
(4.3.1-2ubuntu0.1)
|
|
upstream |
Needs triage
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 9.8 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26937
- https://lists.gnu.org/archive/html/screen-devel/2021-02/msg00000.html
- https://seclists.org/oss-sec/2021/q1/124
- https://seclists.org/oss-sec/2021/q1/129
- https://ubuntu.com/security/notices/USN-4747-1
- https://ubuntu.com/security/notices/USN-4747-2
- NVD
- Launchpad
- Debian