5.5

CVE-2018-20198: audiocoding freeware_advanced_audio_decoder_2 NULL Pointer Dereference

CVSS: 5.5v3.0MediumModified
AliasesALPINE-CVE-2018-20198UBUNTU-CVE-2018-20198DEBIAN-CVE-2018-20198
Published 18-12-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-20198 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in audiocoding freeware_advanced_audio_decoder_2. EPSS estimates a 1.21% chance of exploitation in the next 30 days, higher than 67.9% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.0 (NVD)
EPSS score
1.21%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 2
DLA-1791-1DSA-4522-1

Timeline

  1. 18-12-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

A NULL pointer dereference was discovered in ifilter_bank of libfaad/filtbank.c in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8. The vulnerability causes a segmentation fault and application crash, which leads to denial of service because adding to windowed output is mishandled in the LONG_START_SEQUENCE case.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

1.21%

Chance of exploitation in the next 30 days

Percentile

68%

Versus all other CVEs

30-day change

0.00 pp

From 1.21% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.21%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Faad2

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Alpine1 product
  • faad2< 2.9.0-r0
Audiocoding1 product
Debian1 product
  • faad2< 2.8.8-2
Ubuntu1 product
  • faad2< 2.7-8+deb8u3build0.14.04.1~esm1 | All versions (No fix recorded)

4 vendors · 4 products

References

9 links