HarfBuzz up to 10.0.1 hb_cairo_glyphs_from_buffer heap-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.1$0-$5k0.00

Summaryinfo

A vulnerability was found in HarfBuzz up to 10.0.1 and classified as critical. The affected element is the function hb_cairo_glyphs_from_buffer. Executing a manipulation can lead to heap-based overflow. This vulnerability is handled as CVE-2024-56732. The attack can be executed remotely. There is not any exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in HarfBuzz up to 10.0.1. It has been declared as very critical. This vulnerability affects the function hb_cairo_glyphs_from_buffer. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

HarfBuzz is a text shaping engine. Starting with 8.5.0 through 10.0.1, there is a heap-based buffer overflow in the hb_cairo_glyphs_from_buffer function.

The advisory is shared for download at github.com. This vulnerability was named CVE-2024-56732 since 12/27/2024. 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 current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/26/2025).

The vulnerability scanner Nessus provides a plugin with the ID 216805 (Amazon Linux 2023 : harfbuzz, harfbuzz-devel, harfbuzz-icu (ALAS2023-2025-848)), which helps to determine the existence of the flaw in a target environment.

Applying the patch 1767f99e2e2196c3fcae27db6d8b60098d3f6d26 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (216805). 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: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 9.1

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (GitHub_M): 🔍

CVSSv2info

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

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / 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: 216805
Nessus Name: Amazon Linux 2023 : harfbuzz, harfbuzz-devel, harfbuzz-icu (ALAS2023-2025-848)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 1767f99e2e2196c3fcae27db6d8b60098d3f6d26

Timelineinfo

12/27/2024 🔍
12/27/2024 +0 days 🔍
12/27/2024 +0 days 🔍
02/26/2025 +61 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-qmp9-xqm5-jh6m
Status: Confirmed

CVE: CVE-2024-56732 (🔍)
GCVE (CVE): GCVE-0-2024-56732
GCVE (VulDB): GCVE-100-289636

Entryinfo

Created: 12/27/2024 21:34
Updated: 02/26/2025 20:18
Changes: 12/27/2024 21:34 (68), 12/28/2024 18:39 (11), 02/26/2025 20:18 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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