zsh up to 5.0.6 exec.c memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in zsh up to 5.0.6. The impacted element is an unknown function of the file exec.c. Executing a manipulation can lead to memory corruption. This vulnerability is registered as CVE-2014-10071. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in zsh up to 5.0.6 and classified as critical. This vulnerability affects an unknown function of the file exec.c. 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. CVE summarizes:

In exec.c in zsh before 5.0.7, there is a buffer overflow for very long fds in the ">& fd" syntax.

The bug was discovered 01/20/2014. The weakness was published 02/27/2018 with Red Hat (Website). The advisory is available at sourceforge.net. This vulnerability was named CVE-2014-10071 since 02/27/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 1499 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 109488 (EulerOS 2.0 SP1 : zsh (EulerOS-SA-2018-1090)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Huawei Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157839 (Oracle Enterprise Linux Security Update for zsh (ELSA-2018-3073)).

Upgrading to version 5.0.7 eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (109488) and SecurityFocus (BID 103359†). Similar entries are available at VDB-113889, VDB-113891, VDB-113902 and VDB-113903. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
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: 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: 109488
Nessus Name: EulerOS 2.0 SP1 : zsh (EulerOS-SA-2018-1090)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 63585
OpenVAS Name: Debian LTS Advisory ([SECURITY] [DLA 1304-1] zsh 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: zsh 5.0.7
Patch: sourceforge.net

Timelineinfo

01/20/2014 🔍
02/27/2018 +1499 days 🔍
02/27/2018 +0 days 🔍
02/27/2018 +0 days 🔍
02/28/2018 +1 days 🔍
03/09/2018 +9 days 🔍
03/28/2018 +19 days 🔍
05/02/2018 +35 days 🔍
02/10/2023 +1745 days 🔍

Sourcesinfo

Advisory: RHSA-2018:3073
Organization: Red Hat
Status: Confirmed

CVE: CVE-2014-10071 (🔍)
GCVE (CVE): GCVE-0-2014-10071
GCVE (VulDB): GCVE-100-113890
SecurityFocus: 103359 - Zsh 'exec.c:hashcmd()' Function Local Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 02/28/2018 08:09
Updated: 02/10/2023 16:06
Changes: 02/28/2018 08:09 (75), 01/09/2020 08:38 (5), 02/10/2023 16:06 (5)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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