X.Org libX11 1.5.0/1.5.99.901 Graphical Library memory corruption

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8.6$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in X.Org libX11 1.5.0/1.5.99.901. The impacted element is the function XAllocColorCells/_XkbReadGetDeviceInfoReply/_XkbReadGeomShapes/_XkbReadGetGeometryReply/_XkbReadKeySyms/_XkbReadKeyActions/_XkbReadKeyBehaviors/_XkbReadModifierMap of the component Graphical Library. Executing a manipulation can lead to memory corruption. The identification of this vulnerability is CVE-2013-1997. Furthermore, there is an exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in X.Org libX11 1.5.0/1.5.99.901. This vulnerability affects the function XAllocColorCells/_XkbReadGetDeviceInfoReply/_XkbReadGeomShapes/_XkbReadGetGeometryReply/_XkbReadKeySyms/_XkbReadKeyActions/_XkbReadKeyBehaviors/_XkbReadModifierMap of the component Graphical Library. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Multiple buffer overflows in X.org libX11 1.5.99.901 (1.6 RC1) and earlier allow X servers to cause a denial of service (crash) and possibly execute arbitrary code via crafted length or index values to the (1) XAllocColorCells, (2) _XkbReadGetDeviceInfoReply, (3) _XkbReadGeomShapes, (4) _XkbReadGetGeometryReply, (5) _XkbReadKeySyms, (6) _XkbReadKeyActions, (7) _XkbReadKeyBehaviors, (8) _XkbReadModifierMap, (9) _XkbReadExplicitComponents, (10) _XkbReadVirtualModMap, (11) _XkbReadGetNamesReply, (12) _XkbReadGetMapReply, (13) _XimXGetReadData, (14) XListFonts, (15) XListExtensions, and (16) XGetFontPath functions.

The weakness was shared 05/23/2013 by Ilja van Sprundel with IOActive as not defined advisory (Website). The advisory is shared for download at x.org. The vendor cooperated in the coordination of the public release. This vulnerability was named CVE-2013-1997 since 02/19/2013. The exploitation appears to be difficult. The attack can be initiated remotely. The successful exploitation needs a single authentication. Technical details and also a private exploit are known.

The vulnerability scanner Nessus provides a plugin with the ID 66602 (Debian DSA-2693-1 : libx11 - several vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 185112 (HP-UX Running X Windows Libraries Multiple Vulnerabilities (HPSBUX03049)).

Upgrading to version 1.5.99.902 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at cgit.freedesktop.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (84495), Tenable (66602), SecurityFocus (BID 60122†), OSVDB (93661†) and Secunia (SA53557†). The entries VDB-8875, VDB-8876, VDB-8877 and VDB-8878 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 8.6

VulDB Base Score: 9.9
VulDB Temp Score: 8.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 66602
Nessus Name: Debian DSA-2693-1 : libx11 - several vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 892693
OpenVAS Name: Debian Security Advisory DSA 2693-1 (libx11 - several vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libX11 1.5.99.902
Patch: cgit.freedesktop.org

Timelineinfo

02/19/2013 🔍
05/10/2013 +80 days 🔍
05/23/2013 +13 days 🔍
05/23/2013 +0 days 🔍
05/23/2013 +0 days 🔍
05/24/2013 +1 days 🔍
05/27/2013 +3 days 🔍
06/10/2013 +14 days 🔍
06/15/2013 +5 days 🔍
05/14/2021 +2890 days 🔍

Sourcesinfo

Vendor: x.org

Advisory: x.org
Researcher: Ilja van Sprundel
Organization: IOActive
Status: Not defined
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-1997 (🔍)
GCVE (CVE): GCVE-0-2013-1997
GCVE (VulDB): GCVE-100-8884

OVAL: 🔍

X-Force: 84495
SecurityFocus: 60122 - X.Org libX11 CVE-2013-1997 Multiple Remote Code Execution Vulnerabilities
Secunia: 53557 - X.Org libX11 Multiple Vulnerabilities, Less Critical
OSVDB: 93661
Vulnerability Center: 39933 - libX11 Through 1.5.99.901 Remote Code Execution due to Buffer Overflow in Multiple Functions, Medium

See also: 🔍

Entryinfo

Created: 05/27/2013 17:42
Updated: 05/14/2021 07:36
Changes: 05/27/2013 17:42 (77), 05/02/2017 08:33 (10), 05/14/2021 07:36 (3)
Complete: 🔍
Committer:
Cache ID: 216:866:103

Once again VulDB remains the best source for vulnerability data.

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