FreeType 2 truetype/ttgxvar.c sfnt_init_face out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in FreeType 2. This affects the function sfnt_init_face of the file truetype/ttgxvar.c. Executing a manipulation can lead to out-of-bounds write. The identification of this vulnerability is CVE-2017-7857. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in FreeType 2 (Software Library) (the affected version unknown). It has been declared as critical. This vulnerability affects the function sfnt_init_face of the file truetype/ttgxvar.c. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

FreeType 2 before 2017-03-08 has an out-of-bounds write caused by a heap-based buffer overflow related to the TT_Get_MM_Var function in truetype/ttgxvar.c and the sfnt_init_face function in sfnt/sfobjs.c.

The bug was discovered 04/14/2017. The weakness was shared 04/14/2017 (Website). The advisory is shared for download at git.savannah.gnu.org. This vulnerability was named CVE-2017-7857 since 04/14/2017. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 100657 (GLSA-201706-14 : FreeType: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (100657) and SecurityFocus (BID 97680†). The entries VDB-99845 and VDB-99851 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 100657
Nessus Name: GLSA-201706-14 : FreeType: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: git.savannah.gnu.org

Timelineinfo

04/14/2017 🔍
04/14/2017 +0 days 🔍
04/14/2017 +0 days 🔍
04/14/2017 +0 days 🔍
04/14/2017 +0 days 🔍
04/14/2017 +0 days 🔍
06/06/2017 +53 days 🔍
06/07/2017 +1 days 🔍
07/24/2024 +2604 days 🔍

Sourcesinfo

Advisory: git.savannah.gnu.org
Status: Not defined

CVE: CVE-2017-7857 (🔍)
GCVE (CVE): GCVE-0-2017-7857
GCVE (VulDB): GCVE-100-99844
SecurityFocus: 97680 - FreeType 2 CVE-2017-7857 Multiple Out of Bounds Write Heap Buffer Overflow Vulnerabilities
OSVDB: - CVE-2017-7857 - FreeType 2 - Buffer Overflow Issue

See also: 🔍

Entryinfo

Created: 04/14/2017 11:11
Updated: 07/24/2024 21:16
Changes: 04/14/2017 11:11 (67), 08/31/2020 07:03 (6), 11/29/2022 10:33 (4), 07/24/2024 21:16 (15)
Complete: 🔍
Cache ID: 216:5D5:103

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