PT-2019-18434 · Netwide · Netwide Assembler

Cheng Wen · Published 2019-01-29 · Updated 2020-08-24 · CVE-2019-7147

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Netwide Assembler (NASM) version 2.14rc16

Description A buffer over-read issue exists in the crc64ib function in crc64.c in nasmlib. This can be triggered by a crafted asm input, potentially causing segmentation faults and leading to denial-of-service.

Recommendations For Netwide Assembler (NASM) version 2.14rc16, consider avoiding the use of crafted asm inputs that may trigger the buffer over-read in the crc64ib function until a fix is available. As a temporary workaround, restrict the use of the crc64ib function to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2019-7147

Affected Products

Netwide Assembler

References · 6

• 🔥 https://bugzilla.nasm.us/show_bug.cgi?id=3392544 · Exploit
• https://cve.org/CVERecord?id=CVE-2019-7147 · Security Note
• https://osv.dev/vulnerability/CVE-2019-7147 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-7147 · Security Note
• https://ubuntu.com/security/CVE-2019-7147 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-7147 · Vendor Advisory