CVE-2020-10595
CVSS V2 High 7.5
CVSS V3 Critical 9.8
Description
pam-krb5 before 4.9 has a buffer overflow that might cause remote code execution in situations involving supplemental prompting by a Kerberos library. It may overflow a buffer provided by the underlying Kerberos library by a single '\0' byte if an attacker responds to a prompt with an answer of a carefully chosen length. The effect may range from heap corruption to stack corruption depending on the structure of the underlying Kerberos library, with unknown effects but possibly including code execution. This code path is not used for normal authentication, but only when the Kerberos library does supplemental prompting, such as with PKINIT or when using the non-standard no_prompt PAM configuration option.
Overview
- CVE ID
- CVE-2020-10595
- Assigner
- cve@mitre.org
- Vulnerability Status
- Modified
- Published Version
- 2020-03-31T13:15:13
- Last Modified Date
- 2020-04-04T00:15:23
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:pam-krb5_project:pam-krb5:*:*:*:*:*:*:*:* | 1 | OR | 4.9 | |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 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://github.com/rra/pam-krb5/commit/e7879e27a37119fad4faf133a9f70bdcdc75d760 | Patch Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2020/03/31/1 | Mailing List Patch Third Party Advisory |
| https://www.debian.org/security/2020/dsa-4648 | Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2020/04/msg00000.html | Mailing List Third Party Advisory |
| https://usn.ubuntu.com/4314-1/ | |
| https://www.eyrie.org/~eagle/software/pam-krb5/security/2020-03-30.html |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-10595 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10595 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:45:27 | Added to TrackCVE | |||
| 2022-12-04 13:43:10 | 2020-03-31T13:15Z | 2020-03-31T13:15:13 | CVE Published Date | updated |
| 2022-12-04 13:43:10 | 2020-04-04T00:15:23 | CVE Modified Date | updated | |
| 2022-12-04 13:43:10 | Modified | Vulnerability Status | updated |