GNU less up to 474 UTF-8 Encoding is_utf8_well_formed memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in GNU less up to 474. This issue affects the function is_utf8_well_formed of the component UTF-8 Encoding Handler. This manipulation causes memory corruption. This vulnerability is registered as CVE-2014-9488. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in GNU less up to 474. It has been declared as critical. Affected by this vulnerability is the function is_utf8_well_formed of the component UTF-8 Encoding Handler. 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 summary by CVE is:

The is_utf8_well_formed function in GNU less before 475 allows remote attackers to have unspecified impact via malformed UTF-8 characters, which triggers an out-of-bounds read.

The weakness was published 04/14/2015 (Website). It is possible to read the advisory at blog.fuzzing-project.org. This vulnerability is known as CVE-2014-9488 since 01/03/2015. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 84102 (Fedora 21 : less-471-4.fc21 (2015-9325)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 167700 (OpenSuSE Security Update for less (openSUSE-SU-2015:0595-1)).

Upgrading to version 475 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (84102), SecurityFocus (BID 74159†) and Vulnerability Center (SBV-49818†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
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: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 84102
Nessus Name: Fedora 21 : less-471-4.fc21 (2015-9325)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for less FEDORA-2015-9357
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: less 475

Timelineinfo

01/01/2012 🔍
01/03/2015 +1098 days 🔍
04/14/2015 +101 days 🔍
04/14/2015 +0 days 🔍
04/15/2015 +1 days 🔍
04/15/2015 +0 days 🔍
04/21/2015 +6 days 🔍
06/11/2015 +51 days 🔍
12/07/2024 +3467 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: blog.fuzzing-project.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-9488 (🔍)
GCVE (CVE): GCVE-0-2014-9488
GCVE (VulDB): GCVE-100-74815
SecurityFocus: 74159 - GNU less 'is_utf8_well_formed()' Function Remote Buffer Overflow Vulnerability
Vulnerability Center: 49818 - GNU Less before 475 Remote File System Read via Malformed Characters, Medium

Entryinfo

Created: 04/15/2015 10:30
Updated: 12/07/2024 20:13
Changes: 04/15/2015 10:30 (63), 06/27/2017 03:16 (8), 05/03/2022 23:54 (3), 12/07/2024 20:13 (20)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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