CVE-2021-45931

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

HarfBuzz 2.9.0 has an out-of-bounds write in hb_bit_set_invertible_t::set (called from hb_sparseset_t<hb_bit_set_invertible_t>::set and hb_set_copy).

HarfBuzz versión 2.9.0, presenta una escritura fuera de límites en la función hb_bit_set_invertible_t::set (llamada desde hb_sparseset_t(hb_bit_set_invertible_t)::set y hb_set_copy).

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-12-31 CVE Reserved
2021-12-31 CVE Published
2024-08-04 CVE Updated
2024-08-04 First Exploit
2024-09-15 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-787: Out-of-bounds Write

CAPEC

References (7)

URL	Tag	Source

URL	Date	SRC
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=37425	2024-08-04
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/harfbuzz/OSV-2021-1159.yaml	2024-08-04

URL	Date	SRC
https://github.com/harfbuzz/harfbuzz/commit/d3e09bf4654fe5478b6dbf2b26ebab6271317d81	2023-11-07

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4EAIZKL4O67FN2CWJYHYKZEMNYWNWO3D	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5A7TCR2MY46YK3NHQZB3SLESUH354IEA	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DI6247WOAKB46CZZ6SCDSJVWWCW3GMZH	2023-11-07
https://security.gentoo.org/glsa/202209-11	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Harfbuzz Project Search vendor "Harfbuzz Project"		Harfbuzz Search vendor "Harfbuzz Project" for product "Harfbuzz"				2.9.0 Search vendor "Harfbuzz Project" for product "Harfbuzz" and version "2.9.0"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				34 Search vendor "Fedoraproject" for product "Fedora" and version "34"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				35 Search vendor "Fedoraproject" for product "Fedora" and version "35"		-		Affected