7.5

CVE-2018-14340: debian debian_linux Out-of-bounds Read

CVSS: 7.5v3.0HighModified
AliasesUBUNTU-CVE-2018-14340DEBIAN-CVE-2018-14340
Published 19-07-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-14340 is a high (CVSS 7.5) Out-of-bounds Read vulnerability in debian debian_linux. EPSS estimates a 3.47% chance of exploitation in the next 30 days, higher than 88.9% 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
3.47%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 10 · Related 7
DLA-1451-1MGASA-2018-0320OPENSUSE-SU-2020:0362-1OPENSUSE-SU-2024:11513-1RHSA-2020:1047SUSE-SU-2018:2301-1

Timeline

  1. 19-07-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

In Wireshark 2.6.0 to 2.6.1, 2.4.0 to 2.4.7, and 2.2.0 to 2.2.15, dissectors that support zlib decompression could crash. This was addressed in epan/tvbuff_zlib.c by rejecting negative lengths to avoid a buffer over-read.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

3.47%

Chance of exploitation in the next 30 days

Percentile

89%

Versus all other CVEs

30-day change

+0.02 pp

From 3.45% on 18-09-2026

18-09-202618-10-2026
EPSS score
3.47%

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< 2.6.3-1~ubuntu14.04.1 | < 2.6.3-1~ubuntu16.04.1 | < 2.6.3-1~ubuntu18.04.1
Wireshark1 product
  • wireshark≥ 2.2.0, ≤ 2.2.15 | ≥ 2.4.0, ≤ 2.4.7 | ≥ 2.6.0, ≤ 2.6.1

3 vendors · 4 products

References

11 links
Show all 11 references