FreeType up to 2.1.10 bdf/bdflib.c read_lwfn numeric error

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.6$0-$5k0.00

A vulnerability, which was classified as critical, has been found in FreeType up to 2.1.10 (Software Library). This issue affects the function read_lwfn in the library bdf/bdflib.c. The manipulation with an unknown input leads to a numeric error vulnerability. Using CWE to declare the problem leads to CWE-189. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Multiple integer overflows in FreeType before 2.2 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via attack vectors related to (1) bdf/bdflib.c, (2) sfnt/ttcmap.c, (3) cff/cffgload.c, and (4) the read_lwfn function and a crafted LWFN file in base/ftmac.c. NOTE: item 4 was originally identified by CVE-2006-2493.

The bug was discovered 05/13/2006. The weakness was disclosed 05/23/2006 (Website). The advisory is shared at securityfocus.com. The identification of this vulnerability is CVE-2006-1861 since 04/19/2006. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 10 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 22099 (Slackware 10.2 / current : x11 (SSA:2006-207-02)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Slackware Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 155906 (Oracle Enterprise Linux Update for FreeType (ELSA-2009-0329)).

Upgrading to version 2.2 eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (26553) and Tenable (22099).

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 22099
Nessus Name: Slackware 10.2 / current : x11 (SSA:2006-207-02)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
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OpenVAS ID: 56934
OpenVAS Name: Debian Security Advisory DSA 1095-1 (freetype)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: FreeType 2.2

Timelineinfo

04/19/2006 🔍
05/13/2006 +24 days 🔍
05/19/2006 +6 days 🔍
05/23/2006 +4 days 🔍
05/23/2006 +0 days 🔍
05/23/2006 +0 days 🔍
06/20/2006 +28 days 🔍
07/18/2006 +28 days 🔍
07/26/2006 +8 days 🔍
07/28/2006 +2 days 🔍
05/22/2009 +1029 days 🔍
03/12/2015 +2120 days 🔍
06/21/2019 +1562 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-1861 (🔍)
OVAL: 🔍

X-Force: 26553
SecurityTracker: 1016522
Vulnerability Center: 11966 - Freetype Multiple Integer Overflows, Medium
SecurityFocus: 18034 - FreeType LWFN Files Buffer Overflow Vulnerability
Secunia: 35200 - Red Hat update for freetype, Moderately Critical
OSVDB: 25654 - freetype2 read_lwfn() integer overflow
Vupen: ADV-2006-1868

Entryinfo

Created: 03/12/2015 12:19
Updated: 06/21/2019 08:06
Changes: 03/12/2015 12:19 (89), 06/21/2019 08:06 (4)
Complete: 🔍
Cache ID: 3:D36:103

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