5.4

CVE-2023-6206: debian debian_linux

CVSS: 5.4v3.1MediumModified
AliasesUBUNTU-CVE-2023-6206DEBIAN-CVE-2023-6206CGA-2h39-ccmc-38pw
Published 21-11-2023Last modified 13-02-2025
Open JSON

Vulnerability summary

CVE-2023-6206 is a medium (CVSS 5.4) vulnerability in debian debian_linux. EPSS estimates a 0.64% chance of exploitation in the next 30 days, higher than 50% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (NVD)
EPSS score
0.64%
0%100%
Low · +0.08 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 35 · Related 10
DLA-3661-1DLA-3674-1DSA-5561-1DSA-5566-1MGASA-2023-0342MGASA-2023-0343

Timeline

  1. 21-11-2023
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

Description

The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on permission prompts. It was possible to use this fact to surprise users by luring them to click where the permission grant button would be about to appear. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.64%

Chance of exploitation in the next 30 days

Percentile

50%

Versus all other CVEs

30-day change

+0.08 pp

From 0.56% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.64%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu8 products
  • firefox< 120.0+build2-0ubuntu0.20.04.1
  • mozjs102All versions (No fix recorded)
  • mozjs38All versions (No fix recorded)
  • mozjs52All versions (No fix recorded)
  • mozjs68All versions (No fix recorded)
Debian3 products
  • firefox-esr< 115.5.0esr-1~deb12u1 | < 115.5.0esr-1
  • thunderbird< 1:115.5.0-1~deb12u1 | < 1:115.5.0-1
  • debian_linuxEOL10.0 | 11.0 | 12.0
Mozilla3 products
Chainguard1 product
  • firefox-esr< 120.0-r0

4 vendors · 15 products

References

15 links
Show all 15 references