NASM Netwide Assembler 2.13.02rc2 asm/float.c ieee_shr memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in NASM Netwide Assembler 2.13.02rc2 and classified as critical. Impacted is the function ieee_shr of the file asm/float.c. The manipulation leads to memory corruption. This vulnerability is referenced as CVE-2018-8882. The attack can only be performed from a local environment. No exploit is available.

Detailsinfo

A vulnerability was found in NASM Netwide Assembler 2.13.02rc2 (Programming Tool Software) and classified as critical. This issue affects the function ieee_shr of the file asm/float.c. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Netwide Assembler (NASM) 2.13.02rc2 has a stack-based buffer under-read in the function ieee_shr in asm/float.c via a large shift value.

The bug was discovered 10/18/2017. The weakness was published 03/20/2018 (Website). The advisory is shared at bugzilla.nasm.us. The identification of this vulnerability is CVE-2018-8882 since 03/20/2018. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details are known, 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.

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

Similar entries are available at VDB-114846 and VDB-114844. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day 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 🔍
01/15/2020 +665 days 🔍

Sourcesinfo

Advisory: bugzilla.nasm.us
Status: Not defined

CVE: CVE-2018-8882 (🔍)
GCVE (CVE): GCVE-0-2018-8882
GCVE (VulDB): GCVE-100-114845
See also: 🔍

Entryinfo

Created: 03/21/2018 09:17
Updated: 01/15/2020 13:26
Changes: 03/21/2018 09:17 (59), 01/15/2020 13:26 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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