CVE-2013-0914

Kernel: sa_restorer information leak

Severity Score

6.2

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The flush_signal_handlers function in kernel/signal.c in the Linux kernel before 3.8.4 preserves the value of the sa_restorer field across an exec operation, which makes it easier for local users to bypass the ASLR protection mechanism via a crafted application containing a sigaction system call.

La función flush_signal_handlers en kernel/signal.c en el núcleo de Linux anterior a v3.8.4 conserva el valor del campo sa_restorer a través de una operación exec, que hace más fácil a los usuarios de la zona para evitar el mecanismo de protección ASLR a través de una aplicación diseñado que contenga un sigaction system call llamar.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2013-01-07 CVE Reserved
2013-03-22 CVE Published
2023-03-08 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-264: Permissions, Privileges, and Access Controls

CAPEC

References (19)

URL	Tag	Source
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2ca39528c01a933f6689cd6505ce65bd6d68a530	X_refsource_confirm
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4	X_refsource_confirm
http://www.openwall.com/lists/oss-security/2013/03/11/8	Mailing List
https://github.com/torvalds/linux/commit/2ca39528c01a933f6689cd6505ce65bd6d68a530	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html	2023-11-07
http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html	2023-11-07
http://rhn.redhat.com/errata/RHSA-2013-1051.html	2023-11-07
http://www.mandriva.com/security/advisories?name=MDVSA-2013:176	2023-11-07
http://www.ubuntu.com/usn/USN-1787-1	2023-11-07
http://www.ubuntu.com/usn/USN-1788-1	2023-11-07
http://www.ubuntu.com/usn/USN-1792-1	2023-11-07
http://www.ubuntu.com/usn/USN-1793-1	2023-11-07
http://www.ubuntu.com/usn/USN-1794-1	2023-11-07
http://www.ubuntu.com/usn/USN-1795-1	2023-11-07
http://www.ubuntu.com/usn/USN-1796-1	2023-11-07
http://www.ubuntu.com/usn/USN-1797-1	2023-11-07
http://www.ubuntu.com/usn/USN-1798-1	2023-11-07
https://bugzilla.redhat.com/show_bug.cgi?id=920499	2013-07-16
https://access.redhat.com/security/cve/CVE-2013-0914	2013-07-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				<= 3.8.3 Search vendor "Linux" for product "Linux Kernel" and version " <= 3.8.3"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				3.8.0 Search vendor "Linux" for product "Linux Kernel" and version "3.8.0"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				3.8.1 Search vendor "Linux" for product "Linux Kernel" and version "3.8.1"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				3.8.2 Search vendor "Linux" for product "Linux Kernel" and version "3.8.2"		-		Affected