CVE-2012-2625

xen: pv bootloader doesn't check the size of the bzip2 or lzma compressed kernel

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The PyGrub boot loader in Xen unstable before changeset 25589:60f09d1ab1fe, 4.2.x, and 4.1.x allows local para-virtualized guest users to cause a denial of service (memory consumption) via a large (1) bzip2 or (2) lzma compressed kernel image.

El gestor de arranque Pygrub en Xen inestable ante del changeset 25589:60f09d1ab1fe, v4.2.x, v4.1.x permite causar una denegación de servicio (consumo de memoria) a usuarios locales para-virtualizados a través de una imagen del kernel comprimida en (1) o bzip2 (2) lzma demasiado grande.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Adjacent

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2012-05-11 CVE Reserved
2012-10-31 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (17)

URL	Tag	Source
http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1817	Broken Link
http://secunia.com/advisories/49184	Third Party Advisory
http://secunia.com/advisories/51413	Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/10/26/3	Mailing List
http://www.securityfocus.com/bid/53650	Third Party Advisory
http://www.securitytracker.com/id?1027090	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00024.html	2018-04-13
http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00025.html	2018-04-13
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html	2018-04-13
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html	2018-04-13
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html	2018-04-13
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html	2018-04-13
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html	2018-04-13
http://rhn.redhat.com/errata/RHSA-2012-1130.html	2018-04-13
http://xenbits.xensource.com/hg/xen-unstable.hg/rev/60f09d1ab1fe	2018-04-13
https://access.redhat.com/security/cve/CVE-2012-2625	2012-07-31
https://bugzilla.redhat.com/show_bug.cgi?id=821676	2012-07-31

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.1.0 Search vendor "Xen" for product "Xen" and version "4.1.0"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.1.1 Search vendor "Xen" for product "Xen" and version "4.1.1"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.1.2 Search vendor "Xen" for product "Xen" and version "4.1.2"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.1.3 Search vendor "Xen" for product "Xen" and version "4.1.3"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.2.0 Search vendor "Xen" for product "Xen" and version "4.2.0"		-		Affected
Xen Search vendor "Xen"		Xen-unstable Search vendor "Xen" for product "Xen-unstable"				< 25589\:60f09d1ab1fe Search vendor "Xen" for product "Xen-unstable" and version " < 25589\:60f09d1ab1fe"		-		Affected