7.5

CVE-2018-19623: debian debian_linux Out-of-bounds Write

CVSS: 7.5v3.0HighModified
AliasesUBUNTU-CVE-2018-19623DEBIAN-CVE-2018-19623
Published 29-11-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-19623 is a high (CVSS 7.5) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 4.15% chance of exploitation in the next 30 days, higher than 90.7% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
41/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.0 (NVD)
EPSS score
4.15%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 7 · Related 5
DLA-1634-1DSA-4359-1OPENSUSE-SU-2020:0362-1OPENSUSE-SU-2024:11513-1SUSE-SU-2018:4295-1SUSE-SU-2018:4298-1

Timeline

  1. 29-11-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

In Wireshark 2.6.0 to 2.6.4 and 2.4.0 to 2.4.10, the LBMPDM dissector could crash. In addition, a remote attacker could write arbitrary data to any memory locations before the packet-scoped memory. This was addressed in epan/dissectors/packet-lbmpdm.c by disallowing certain negative values.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

4.15%

Chance of exploitation in the next 30 days

Percentile

91%

Versus all other CVEs

30-day change

0.00 pp

From 4.15% on 18-09-2026

18-09-202618-10-2026
EPSS score
4.15%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugs.wireshark.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian2 products
Ubuntu1 product
  • wireshark< 2.6.5-1~ubuntu14.04.1 | < 2.6.5-1~ubuntu16.04.0 | < 2.6.5-1~ubuntu18.04.0
Wireshark1 product
  • wireshark≥ 2.4.0, ≤ 2.4.10 | ≥ 2.6.0, ≤ 2.6.4

3 vendors · 4 products

References

12 links
Show all 12 references