Mozilla Firefox 39 ReplacePrep memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Mozilla Firefox 39. It has been rated as critical. Affected by this vulnerability is the function nsTSubstring::ReplacePrep. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2015-4487. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in Mozilla Firefox 39 (Web Browser). Affected by this vulnerability is the function nsTSubstring::ReplacePrep. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was disclosed 08/11/2015 as MFSA 2015-90 as confirmed security advisory (Website). The advisory is shared at mozilla.org. This vulnerability is known as CVE-2015-4487 since 06/10/2015. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/22/2024).

The vulnerability scanner Nessus provides a plugin with the ID 85336 (CentOS 5 / 6 / 7 : firefox (CESA-2015:1586)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175574 (Debian Security Update for icedove (DSA 3410-1)).

Upgrading to version 40 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (105523), Tenable (85336), SecurityFocus (BID 76304†) and Vulnerability Center (SBV-51915†). The entries VDB-76999, VDB-77001, VDB-77075 and VDB-77078 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 8.7

VulDB Base Score: 10.0
VulDB Temp Score: 8.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 85336
Nessus Name: CentOS 5 / 6 / 7 : firefox (CESA-2015:1586)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 703333
OpenVAS Name: Debian Security Advisory DSA 3333-1 (iceweasel - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Firefox 40

Timelineinfo

06/10/2015 🔍
08/11/2015 +62 days 🔍
08/11/2015 +0 days 🔍
08/11/2015 +0 days 🔍
08/12/2015 +1 days 🔍
08/13/2015 +1 days 🔍
08/15/2015 +2 days 🔍
10/22/2024 +3356 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2015-90
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-4487 (🔍)
GCVE (CVE): GCVE-0-2015-4487
GCVE (VulDB): GCVE-100-77077

OVAL: 🔍

X-Force: 105523 - Mozilla Firefox nsTSubstring::ReplacePrep buffer overflow
SecurityFocus: 76304
SecurityTracker: 1033247
Vulnerability Center: 51915 - Mozilla Firefox <40, Firefox ESR 38.2, Firefox OS <2.2 Unspecified Remote Vulnerability in TSubstring::ReplacePrep, Medium

See also: 🔍

Entryinfo

Created: 08/13/2015 11:13
Updated: 10/22/2024 22:28
Changes: 08/13/2015 11:13 (71), 10/05/2017 18:24 (3), 06/09/2022 12:30 (3), 06/09/2022 12:37 (1), 10/22/2024 22:28 (15)
Complete: 🔍
Cache ID: 216:209:103

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