libiberty cplus-dem.c out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in libiberty. It has been rated as critical. This impacts the function demangle_template_value_parm/do_hpacc_template_literal of the file cplus-dem.c. Performing a manipulation results in out-of-bounds. This vulnerability was named CVE-2016-4493. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in libiberty (version unknown). This affects the function demangle_template_value_parm/do_hpacc_template_literal of the file cplus-dem.c. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The demangle_template_value_parm and do_hpacc_template_literal functions in cplus-dem.c in libiberty allow remote attackers to cause a denial of service (out-of-bounds read and crash) via a crafted binary.

The bug was discovered 05/05/2016. The weakness was presented 02/24/2017 (Website). The advisory is shared at gcc.gnu.org. This vulnerability is uniquely identified as CVE-2016-4493 since 05/05/2016. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 74 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 92380 (Debian DLA-552-1 : binutils security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196831 (Ubuntu Security Notification for Valgrind Vulnerabilities (USN-3337-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (92380) and SecurityFocus (BID 90014†). See VDB-96611, VDB-97283, VDB-97287 and VDB-97288 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
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: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 92380
Nessus Name: Debian DLA-552-1 : binutils security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for libiberty USN-3368-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/03/2016 🔍
05/05/2016 +2 days 🔍
05/05/2016 +0 days 🔍
07/18/2016 +74 days 🔍
07/19/2016 +1 days 🔍
02/24/2017 +220 days 🔍
02/24/2017 +0 days 🔍
02/25/2017 +1 days 🔍
08/17/2020 +1269 days 🔍

Sourcesinfo

Advisory: gcc.gnu.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-4493 (🔍)
GCVE (CVE): GCVE-0-2016-4493
GCVE (VulDB): GCVE-100-97293
SecurityFocus: 90014 - GNU GCC 'lilibiberty/cplus-dem.c' Multiple Denial of Service Vulnerabilities
OSVDB: - CVE-2016-4493 - libiberty - Out-of-Bounds Read Issue

See also: 🔍

Entryinfo

Created: 02/25/2017 09:56
Updated: 08/17/2020 20:11
Changes: 02/25/2017 09:56 (73), 08/17/2020 20:11 (6)
Complete: 🔍
Cache ID: 216:82C:103

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