Mozilla Firefox up to 110 memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$5k-$25k0.00

Summaryinfo

A vulnerability has been found in Mozilla Firefox up to 110 and classified as critical. This issue affects some unknown processing. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2023-28177. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Mozilla Firefox up to 110 (Web Browser) and classified as critical. This issue affects an unknown part. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Memory safety bugs present in Firefox 110. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 111.

The weakness was disclosed 03/14/2023 by Calixte Denizet, Gabriele Svelto and Andrew McCreight as Memory safety bugs fixed in Firefox 111 as confirmed advisory (Website). The advisory is shared at bugzilla.mozilla.org. The advisory contains:

Mozilla developers and community members Calixte Denizet, Gabriele Svelto, Andrew McCreight, and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 110. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.
The identification of this vulnerability is CVE-2023-28177. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 12/02/2025).

Upgrading to version 111 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-31885). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 8.8
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Memory corruption
CWE: 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Firefox 111

Timelineinfo

03/13/2023 🔍
03/14/2023 +1 days 🔍
03/14/2023 +0 days 🔍
04/14/2023 +31 days 🔍
12/02/2025 +963 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: Memory safety bugs fixed in Firefox 111
Researcher: Calixte Denizet, Gabriele Svelto, Andrew McCreight
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2023-28177 (🔍)
GCVE (CVE): GCVE-0-2023-28177
GCVE (VulDB): GCVE-100-225977
EUVD: 🔍

Entryinfo

Created: 04/14/2023 16:21
Updated: 12/02/2025 11:52
Changes: 04/14/2023 16:21 (17), 04/14/2023 16:24 (28), 05/03/2023 09:58 (1), 01/08/2025 22:23 (36), 04/27/2025 10:18 (3), 12/02/2025 11:52 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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