certfr_avis - certa-2012-avi-034

CERTA-2012-AVI-034

Vulnerability from certfr_avis - Published: - Updated:

Une vulnérabilité dans le noyau Linux permet à un utilisateur d'élever ses privilèges.

Description

Une vulnérabilité a été corrigée dans le noyau Linux. Le noyau ne contrôle pas correctement les permissions en écriture lors d'un accès à /proc/\<pid>/mem par la fonction mem_write. Un utilisateur peut exploiter cette vulnérabilité pour élever ses privilèges.

Solution

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Certaines versions du noyau Linux 2.6.3x. Se référer aux bulletins des fournisseurs de distributions Linux pour connaître leurs versions concernées. La version stable de Debian n'est pas affectée.

Impacted products

	Vendor	Product	Description

References

Title

Publication Time

CVE-2012-0056 (GCVE-0-2012-0056)

Vulnerability from cvelistv5 – Published: 2012-01-27 15:00 – Updated: 2024-08-06 18:09

Summary

The mem_write function in the Linux kernel before 3.2.2, when ASLR is disabled, does not properly check permissions when writing to /proc/<pid>/mem, which allows local users to gain privileges by modifying process memory, as demonstrated by Mempodipper.

Severity ?

No CVSS data available.

CWE

Assigner

redhat

References

URL

Tags

	http://www.securityfocus.com/bid/51625	vdb-entryx_refsource_BID
	http://blog.zx2c4.com/749	x_refsource_MISC
	http://git.kernel.org/?p=linux/kernel/git/torvald…	x_refsource_CONFIRM
	http://ubuntu.com/usn/usn-1336-1	vendor-advisoryx_refsource_UBUNTU
	http://www.redhat.com/support/errata/RHSA-2012-00…	vendor-advisoryx_refsource_REDHAT
	http://secunia.com/advisories/47708	third-party-advisoryx_refsource_SECUNIA
	http://www.openwall.com/lists/oss-security/2012/01/19/4	mailing-listx_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2012/01/18/2	mailing-listx_refsource_MLIST
	http://www.redhat.com/support/errata/RHSA-2012-00…	vendor-advisoryx_refsource_REDHAT
	http://www.openwall.com/lists/oss-security/2012/01/18/1	mailing-listx_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2012/01/22/4	mailing-listx_refsource_MLIST
	https://bugzilla.redhat.com/show_bug.cgi?id=782642	x_refsource_CONFIRM
	http://www.kernel.org/pub/linux/kernel/v3.x/Chang…	x_refsource_CONFIRM
	http://www.kb.cert.org/vuls/id/470151	third-party-advisoryx_refsource_CERT-VN

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

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