CVE-2017-7844 json
A combination of an external SVG image referenced on a page and the coloring of anchor links stored within this image can be used to determ…
published 2018-06-11 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-16819
- cvss
- 6.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.7%
- EPSS 1.7% chance of exploitation in 30 days, percentile 77%
- public exploits
- 0
- none known
Summary
A combination of an external SVG image referenced on a page and the coloring of anchor links stored within this image can be used to determine which pages a user has in their history. This can allow a malicious website to query user history. Note: This issue only affects Firefox 57. Earlier releases are not affected. This vulnerability affects Firefox < 57.0.1.
Patch / fix
- Mozilla Firefox 57.0.1
- firefox Ubuntu 14.04 LTS 57.0.1+build2-0ubuntu0.14.04.1
- firefox Ubuntu 16.04 LTS 57.0.1+build2-0ubuntu0.16.04.1
- firefox Ubuntu 18.04 LTS 57.0.1+build2-0ubuntu1
ubuntu advisories UBUNTU-CVE-2017-7844
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- firefox-esr openSUSE Tumbleweed 128.5.1-1.1
- MozillaFirefox openSUSE Tumbleweed 92.0-1.2
opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:10600-1
Exploit prediction
1.72% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 6.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Affected products
- Mozilla Firefox
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
-
mozilla.org
/security/advisories/mfsa2017-27/
vendor-advisory
-
securitytracker.com
/id/1039954
vdb-entry, third-party-advisory
-
securityfocus.com
/bid/102039
vdb-entry, third-party-advisory
-
bugzilla.mozilla.org
/show_bug.cgi?id=1420001
issue-tracking, permissions-required, third-party-advisory
Sources
- CVE List CVE-2017-7844
- NVD CVE-2017-7844
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.