6.5

CVE-2017-5420: mozilla firefox Improper Input Validation

CVSS: 6.5v3.0MediumModified
AliasesUBUNTU-CVE-2017-5420
Published 11-06-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2017-5420 is a medium (CVSS 6.5) Improper Input Validation vulnerability in mozilla firefox. EPSS estimates a 1.25% chance of exploitation in the next 30 days, higher than 68.9% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.0 (NVD)
EPSS score
1.25%
0%100%
Low · -0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 4 · Related 3
MGASA-2018-0018OPENSUSE-SU-2024:10600-1OPENSUSE-SU-2024:14572-1USN-3216-1

Timeline

  1. 11-06-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

A "javascript:" url loaded by a malicious page can obfuscate its location by blanking the URL displayed in the addressbar, allowing for an attacker to spoof an existing page without the malicious page's address being displayed correctly. This vulnerability affects Firefox < 52.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.25%

Chance of exploitation in the next 30 days

Percentile

69%

Versus all other CVEs

30-day change

-0.03 pp

From 1.28% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.25%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugzilla.mozilla.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Mozilla1 product
  • firefox≥ unspecified, < 52 | < 52.0
Ubuntu1 product
  • firefox< 52.0+build2-0ubuntu0.14.04.1 | < 52.0+build2-0ubuntu0.16.04.1

2 vendors · 2 products

References

8 links