8.8

CVE-2023-6208: debian debian_linux

CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2023-6208DEBIAN-CVE-2023-6208CGA-2452-673g-p5h7
Published 21-11-2023Last modified 13-02-2025
Open JSON

Vulnerability summary

CVE-2023-6208 is a high (CVSS 8.8) vulnerability in debian debian_linux. EPSS estimates a 0.89% chance of exploitation in the next 30 days, higher than 58.8% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (NVD)
EPSS score
0.89%
0%100%
Low · +0.11 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

When using X11, text selected by the page using the Selection API was erroneously copied into the primary selection, a temporary storage not unlike the clipboard. *This bug only affects Firefox on X11. Other systems are unaffected.* 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

0.89%

Chance of exploitation in the next 30 days

Percentile

59%

Versus all other CVEs

30-day change

+0.11 pp

From 0.78% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.89%

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

No weakness data has been published for this record.

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