FreeType 2 truetype/ttgxvar.c sfnt_init_face out-of-bounds write
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
8.4 | $0-$5k | 0.00 |
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 vulnerability database at Tenable (100657). The entries 99845 and 99851 are related to this item.
Product
Type
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
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CVSSv3
VulDB Meta Base Score: 8.5VulDB 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: 🔍
CVSSv2
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VulDB Base Score: 🔍
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Exploiting
Class: Out-of-bounds writeCWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
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Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Nessus ID: 100657
Nessus Name: GLSA-201706-14 : FreeType: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Patch: git.savannah.gnu.org
Timeline
04/14/2017 🔍04/14/2017 🔍
04/14/2017 🔍
04/14/2017 🔍
04/14/2017 🔍
04/14/2017 🔍
06/06/2017 🔍
06/07/2017 🔍
11/29/2022 🔍
Sources
Advisory: git.savannah.gnu.orgStatus: Not defined
CVE: CVE-2017-7857 (🔍)
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: 🔍
Entry
Created: 04/14/2017 11:11Updated: 11/29/2022 10:33
Changes: 04/14/2017 11:11 (67), 08/31/2020 07:03 (6), 11/29/2022 10:33 (4)
Complete: 🔍
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