CVE-2020-10595 Detail
Current 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 ‘ ’ 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.
Source: MITRE
View Analysis Description
Analysis 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 ‘ ’ 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.
Source: MITRE
Severity
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-120 | Buffer Copy without Checking Size of Input (‘Classic Buffer Overflow’) | NIST |
Known Affected Software Configurations Switch to CPE 2.2
Configuration 1 ( hide )
| cpe:2.3:a:pam-krb5_project:pam-krb5:*:*:*:*:*:*:*:* Show Matching CPE(s) |
Up to (excluding) 4.9 |
Configuration 2 ( hide )
Change History
3 change records found – show changes
Initial Analysis – 4/1/2020 4:56:34 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | CPE Configuration |
OR
*cpe:2.3:a:pam-krb5_project:pam-krb5:*:*:*:*:*:*:*:* versions up to (excluding) 4.9
|
|
| Added | CPE Configuration |
OR
*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
|
|
| Added | CVSS V2 |
NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) |
|
| Added | CVSS V3.1 |
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
|
| Added | CWE |
NIST CWE-120 |
|
| Changed | Reference Type |
http://www.openwall.com/lists/oss-security/2020/03/31/1 No Types Assigned |
http://www.openwall.com/lists/oss-security/2020/03/31/1 Mailing List, Patch, Third Party Advisory |
| Changed | Reference Type |
https://github.com/rra/pam-krb5/commit/e7879e27a37119fad4faf133a9f70bdcdc75d760 No Types Assigned |
https://github.com/rra/pam-krb5/commit/e7879e27a37119fad4faf133a9f70bdcdc75d760 Patch, Third Party Advisory |
| Changed | Reference Type |
https://lists.debian.org/debian-lts-announce/2020/04/msg00000.html No Types Assigned |
https://lists.debian.org/debian-lts-announce/2020/04/msg00000.html Mailing List, Third Party Advisory |
| Changed | Reference Type |
https://www.debian.org/security/2020/dsa-4648 No Types Assigned |
https://www.debian.org/security/2020/dsa-4648 Third Party Advisory |
CVE Modified by MITRE – 4/1/2020 1:15:15 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | Reference |
https://lists.debian.org/debian-lts-announce/2020/04/msg00000.html [No Types Assigned] |
CVE Modified by MITRE – 3/31/2020 8:15:26 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | Reference |
https://www.debian.org/security/2020/dsa-4648 [No Types Assigned] |
Quick Info
CVE Dictionary Entry:
CVE-2020-10595
NVD Published Date:
03/31/2020
NVD Last Modified:
04/01/2020