CVE-2010-0832

Linux PAM 1.1.0 (Ubuntu 9.10/10.04) - MOTD File Tampering Privilege Escalation

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

pam_motd (aka the MOTD module) in libpam-modules before 1.1.0-2ubuntu1.1 in PAM on Ubuntu 9.10 and libpam-modules before 1.1.1-2ubuntu5 in PAM on Ubuntu 10.04 LTS allows local users to change the ownership of arbitrary files via a symlink attack on .cache in a user's home directory, related to "user file stamps" and the motd.legal-notice file.

pam_motd (también conocido como el módulo MOTD) en libpam-modules anterior a v1.1.0-2ubuntu1.1 en PAM en Ubuntu v9.10 y libpam-modules anterior v1.1.1-2ubuntu5 en PAM en Ubuntu v10.04 LTS permite a usuarios locales cambiar propiedades de ficheros arbitrarios mediante un ataque symlink en .cache en el directorio home del usuario, relacionados con "user file stamps" y el fichero motd.legal-notice

USN-959-1 fixed vulnerabilities in PAM. This update provides the corresponding updates for Ubuntu 10.10. Denis Excoffier discovered that the PAM MOTD module in Ubuntu did not correctly handle path permissions when creating user file stamps. A local attacker could exploit this to gain root privileges.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2010-03-03 CVE Reserved
2010-07-08 CVE Published
2010-07-08 First Exploit
2024-08-07 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-59: Improper Link Resolution Before File Access ('Link Following')

CAPEC

References (13)

URL	Tag	Source
http://twitter.com/jonoberheide/statuses/18009527979	X_refsource_misc
http://www.h-online.com/security/news/item/Ubuntu-closes-root-hole-1034618.html	X_refsource_misc
http://www.osvdb.org/66116	Vdb Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/60194	Vdb Entry

URL	Date	SRC
https://packetstorm.news/files/id/91613	2010-07-08
https://packetstorm.news/files/id/91677	2010-07-13
https://www.exploit-db.com/exploits/14339	2010-07-12
https://www.exploit-db.com/exploits/14273	2010-07-10
http://www.exploit-db.com/exploits/14273	2024-08-07
http://www.securityfocus.com/bid/41465	2024-08-07

URL	Date	SRC

URL	Date	SRC
http://secunia.com/advisories/40512	2017-08-17
http://www.ubuntu.com/usn/USN-959-1	2017-08-17
http://www.vupen.com/english/advisories/2010/1747	2017-08-17

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				10.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "10.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				9.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "9.10"		-		Affected