5.5

CVE-2018-19755: nasm netwide_assembler Improper Input Validation

CVSS: 5.5v3.0MediumModified
AliasesUBUNTU-CVE-2018-19755DEBIAN-CVE-2018-19755
Published 30-11-2018Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2018-19755 is a medium (CVSS 5.5) Improper Input Validation vulnerability in nasm netwide_assembler. EPSS estimates a 1.00% chance of exploitation in the next 30 days, higher than 62.1% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.0 (NVD)
EPSS score
1.00%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2reference

Timeline

  1. 30-11-2018
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

There is an illegal address access at asm/preproc.c (function: is_mmacro) in Netwide Assembler (NASM) 2.14rc16 that will cause a denial of service (out-of-bounds array access) because a certain conversion can result in a negative integer.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.00%

Chance of exploitation in the next 30 days

Percentile

62%

Versus all other CVEs

30-day change

0.00 pp

From 1.00% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.00%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • referenceUnverified

    Exploit Reference (repo.or.cz)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (bugzilla.nasm.us)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • nasm< 2.15.02-1
Nasm1 product
Ubuntu1 product
  • nasmAll versions (No fix recorded)

3 vendors · 3 products

References

5 links