Mgetty up to 1.2.0 contrib/scrts.c Parameter memory corruption
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.3 | $0-$5k | 0.00 |
A vulnerability was found in Mgetty up to 1.2.0. It has been declared as critical. Affected by this vulnerability is an unknown code of the file contrib/scrts.c. The manipulation as part of a Parameter 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:
An issue was discovered in mgetty before 1.2.1. In contrib/scrts.c, a stack-based buffer overflow can be triggered via a command-line parameter.
The bug was discovered 09/11/2018. The weakness was shared 09/13/2018 (Website). The advisory is shared at x41-dsec.de. This vulnerability is known as CVE-2018-16742 since 09/09/2018. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.
The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 117855 (openSUSE Security Update : mgetty (openSUSE-2018-1080)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171593 (SUSE Enterprise Linux Security Update for mgetty (SUSE-SU-2018:2850-1)).
Upgrading to version 1.2.1 eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (117855). The entries 124008, 124010, 124011 and 124012 are related to this item.
Product
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
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CVSSv3
VulDB Meta Base Score: 6.5VulDB Meta Temp Score: 6.4
VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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VulDB Reliability: 🔍
NVD Base Score: 7.8
NVD Vector: 🔍
CVSSv2
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Exploiting
Class: Memory corruptionCWE: CWE-119
ATT&CK: Unknown
Local: Yes
Remote: No
Availability: 🔍
Status: Not defined
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0-Day | unlock | unlock | unlock | unlock |
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Nessus ID: 117855
Nessus Name: openSUSE Security Update : mgetty (openSUSE-2018-1080)
Nessus File: 🔍
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Threat Intelligence
Interest: 🔍Active Actors: 🔍
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Countermeasures
Recommended: UpgradeStatus: 🔍
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Upgrade: Mgetty 1.2.1
Timeline
09/09/2018 🔍09/11/2018 🔍
09/13/2018 🔍
09/13/2018 🔍
09/14/2018 🔍
09/28/2018 🔍
10/01/2018 🔍
03/23/2020 🔍
Sources
Advisory: x41-dsec.deStatus: Confirmed
CVE: CVE-2018-16742 (🔍)
See also: 🔍
Entry
Created: 09/14/2018 07:10Updated: 03/23/2020 15:46
Changes: 09/14/2018 07:10 (73), 03/23/2020 15:46 (2)
Complete: 🔍
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