uClibc 0.9.33.2 Regular Expression misc/regex/regexec.c get_subexp out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in uClibc 0.9.33.2. Affected by this vulnerability is the function get_subexp of the file misc/regex/regexec.c of the component Regular Expression. This manipulation causes out-of-bounds. The identification of this vulnerability is CVE-2017-9728. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in uClibc 0.9.33.2. Affected by this vulnerability is the function get_subexp of the file misc/regex/regexec.c of the component Regular Expression. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In uClibc 0.9.33.2, there is an out-of-bounds read in the get_subexp function in misc/regex/regexec.c when processing a crafted regular expression.

The bug was discovered 06/16/2017. The weakness was shared 06/16/2017 (Website). It is possible to read the advisory at openwall.com. This vulnerability is known as CVE-2017-9728 since 06/16/2017. The exploitation appears to be easy. 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 254360 (Linux Distros Unpatched Vulnerability : CVE-2017-9728), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (254360). The entry VDB-102620 is related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / 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: 254360
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2017-9728

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/16/2017 🔍
06/16/2017 +0 days 🔍
06/16/2017 +0 days 🔍
06/16/2017 +0 days 🔍
06/16/2017 +0 days 🔍
08/25/2025 +2992 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Not defined

CVE: CVE-2017-9728 (🔍)
GCVE (CVE): GCVE-0-2017-9728
GCVE (VulDB): GCVE-100-102619
See also: 🔍

Entryinfo

Created: 06/16/2017 21:20
Updated: 08/25/2025 15:43
Changes: 06/16/2017 21:20 (57), 10/18/2019 13:04 (1), 08/25/2025 15:43 (18)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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