CVE-2018-0499 — A cross-site scripting vulnerability in queryparser/termgenerator_internal

A cross-site scripting vulnerability in queryparser/termgenerator_internal.cc in Xapian xapian-core before 1.4.6 exists due to incomplete HTML escaping by Xapian::MSet::snippet().

01What is this vulnerability?

A cross-site scripting vulnerability in queryparser/termgenerator_internal.cc in Xapian xapian-core before 1.4.6 exists due to incomplete HTML escaping by Xapian::MSet::snippet().

02Affected products

Vendor	Product	Versions
n	a / Xapian xapian	core before 1.4.6 — Xapian xapian-core before 1.4.6

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-07-02T12:00:00.000Z
• Last modified: 2024-08-05T03:28:10.931Z

09References

• trac.xapian.org — https://trac.xapian.org/wiki/SecurityFixes/2018-07-02
• usn.ubuntu.com — https://usn.ubuntu.com/3709-1/
• lists.xapian.org — https://lists.xapian.org/pipermail/xapian-discuss/2018-July/009652.html