certfr_avis - certa-2012-avi-034

CERTA-2012-AVI-034

Vulnerability from certfr_avis

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

Modified

2024-08-06 18:09

Severity ?

CWE

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.

References

URL

Tags

	http://www.securityfocus.com/bid/51625	vdb-entry, x_refsource_BID
	http://blog.zx2c4.com/749	x_refsource_MISC
	http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=e268337dfe26dfc7efd422a804dbb27977a3cccc	x_refsource_CONFIRM
	http://ubuntu.com/usn/usn-1336-1	vendor-advisory, x_refsource_UBUNTU
	http://www.redhat.com/support/errata/RHSA-2012-0052.html	vendor-advisory, x_refsource_REDHAT
	http://secunia.com/advisories/47708	third-party-advisory, x_refsource_SECUNIA
	http://www.openwall.com/lists/oss-security/2012/01/19/4	mailing-list, x_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2012/01/18/2	mailing-list, x_refsource_MLIST
	http://www.redhat.com/support/errata/RHSA-2012-0061.html	vendor-advisory, x_refsource_REDHAT
	http://www.openwall.com/lists/oss-security/2012/01/18/1	mailing-list, x_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2012/01/22/4	mailing-list, x_refsource_MLIST
	https://bugzilla.redhat.com/show_bug.cgi?id=782642	x_refsource_CONFIRM
	http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2	x_refsource_CONFIRM
	http://www.kb.cert.org/vuls/id/470151	third-party-advisory, x_refsource_CERT-VN

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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