Risk | High |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-26937 |
CWE-ID | CWE-88 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Gentoo Linux Operating systems & Components / Operating system |
Vendor | Gentoo |
Security Bulletin
This security bulletin contains one high risk vulnerability.
EUVDB-ID: #VU50842
Risk: High
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-26937
CWE-ID:
CWE-88 - Argument Injection or Modification
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to incorrect processing of user-supplied data in the encoding.c file. A remote attacker can pass specially crafted UTF-8 character sequence to the GNU Screen application and perform a denial of service attack or execute arbitrary code on the system.
Update the affected packages.
app-misc/screen to version: 4.8.0-r2
Gentoo Linux: All versions
External linkshttp://security.gentoo.org/
http://security.gentoo.org/glsa/202105-11
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.