Buffer overflow in Nasm Netwide_assembler

CVE-2017-17811

In Netwide Assembler (NASM) 2.14rc0, there is a heap-based buffer overflow that will cause a remote denial of service attack, related to a strcpy in paste_tokens in asm/preproc.c, a similar issue to CVE-2017-11111.

Vulnerability class: Buffer Overflow

EPSS: 0.002 (40.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cve@mitre.org (Exploit, x_refsource_MISC, Issue Tracking, Vendor Advisory)
  • cve@mitre.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2017-17811?
CVE-2017-17811 is a medium-severity vulnerability in Nasm Netwide_assembler, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.5/10. Published 2017-12-21.
How severe is CVE-2017-17811?
Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2017-17811 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.