Vulnerability in PHP
CVE-2010-4657
PHP5 before 5.4.4 allows passing invalid utf-8 strings via the xmlTextWriterWriteAttribute, which are then misparsed by libxml2. This results in memory leak into the resulting output.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.015 (73.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
- PHP
- Php5 — versions before 5.4.4
- Debian Linux — versions 8.0
- Red Hat Enterprise Linux — versions 5.0, 6.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-tracker.debian.org/tracker/CVE-2010-4657 (Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- access.redhat.com/security/cve/cve-2010-4657 (Third Party Advisory)
- bugs.launchpad.net/php/+bug/655442 (Third Party Advisory)
Frequently asked questions
- What is CVE-2010-4657?
- CVE-2010-4657 is a high-severity vulnerability in PHP, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2019-11-13.
- How severe is CVE-2010-4657?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2010-4657 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.