CVE-2021-26937
CVSS V2 High 7.5
CVSS V3 Critical 9.8
Description
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.
Overview
- CVE ID
- CVE-2021-26937
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-02-09T20:15:14
- Last Modified Date
- 2022-05-06T20:59:27
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:gnu:screen:*:*:*:*:*:*:*:* | 1 | OR | 4.8.0 | |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 7.5
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.8
- Base Severity
- CRITICAL
- Exploitability Score
- 3.9
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2021/02/09/3 | Exploit Mailing List Third Party Advisory |
| https://ftp.gnu.org/gnu/screen/ | Product |
| https://lists.gnu.org/archive/html/screen-devel/2021-02/msg00000.html | Exploit Mailing List Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2021/02/09/8 | Exploit Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/02/msg00031.html | Mailing List Third Party Advisory |
| https://www.debian.org/security/2021/dsa-4861 | Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JJWLXP45POUUYBJRRWPVAWNZDJTLYWVM/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GNWBOIDEPOEQS5RMQVMFKHKXJCGNYWBL/ | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202105-11 | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-26937 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26937 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-08 06:06:53 | Added to TrackCVE | |||
| 2022-12-05 21:45:49 | 2021-02-09T20:15Z | 2021-02-09T20:15:14 | CVE Published Date | updated |
| 2022-12-05 21:45:49 | 2022-05-06T20:59:27 | CVE Modified Date | updated | |
| 2022-12-05 21:45:49 | Analyzed | Vulnerability Status | updated |