NASM Netwide Assembler 2.13.02rc2 asm/preproc.c tokenize String memory corruption

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

Summaryinfo

A vulnerability, which was classified as critical, was found in NASM Netwide Assembler 2.13.02rc2. This issue affects the function tokenize of the file asm/preproc.c. Executing a manipulation as part of String can lead to memory corruption. The identification of this vulnerability is CVE-2018-8881. The attack can only be executed locally. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in NASM Netwide Assembler 2.13.02rc2 (Programming Tool Software) and classified as critical. This vulnerability affects the function tokenize of the file asm/preproc.c. The manipulation as part of a String 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:

Netwide Assembler (NASM) 2.13.02rc2 has a heap-based buffer over-read in the function tokenize in asm/preproc.c, related to an unterminated string.

The bug was discovered 10/18/2017. The weakness was shared 03/20/2018 (Website). The advisory is shared for download at bugzilla.nasm.us. This vulnerability was named CVE-2018-8881 since 03/20/2018. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 153 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 110805 (Ubuntu 14.04 LTS : nasm vulnerabilities (USN-3694-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197182 (Ubuntu Security Notification for Nasm Vulnerabilities (USN-3694-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (110805). The entries VDB-106322 and VDB-110951 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.3
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: 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: 110805
Nessus Name: Ubuntu 14.04 LTS : nasm vulnerabilities (USN-3694-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

10/18/2017 🔍
03/20/2018 +153 days 🔍
03/20/2018 +0 days 🔍
03/20/2018 +0 days 🔍
03/21/2018 +1 days 🔍
06/28/2018 +99 days 🔍
06/29/2018 +1 days 🔍
02/22/2023 +1699 days 🔍

Sourcesinfo

Advisory: USN-3694-1
Status: Not defined

CVE: CVE-2018-8881 (🔍)
GCVE (CVE): GCVE-0-2018-8881
GCVE (VulDB): GCVE-100-114844
See also: 🔍

Entryinfo

Created: 03/21/2018 09:16
Updated: 02/22/2023 14:19
Changes: 03/21/2018 09:16 (74), 01/15/2020 13:21 (3), 02/22/2023 14:19 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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