Out-of-bounds Read in Xmlsoft Libxml2
CVE-2017-9050
libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictAddString function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for CVE-2016-1839.
Vulnerability class: Buffer Overflow
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:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.046 (91.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.046 · newest: 0.046 · change: 0.000
Affected products
- Xmlsoft Libxml2 — versions 2.9.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/98568 (VDB Entry, Third Party Advisory, vdb-entry)
- www.debian.org/security/2017/dsa-3952 (vendor-advisory)
- security.gentoo.org/glsa/201711-01 (vendor-advisory)
- www.openwall.com/lists/oss-security/2017/05/15/1 (Exploit, Patch, Mailing List, Third Party Advisory)
- lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a4508… (mailing-list)
- lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698… (mailing-list)
Frequently asked questions
- What is CVE-2017-9050?
- CVE-2017-9050 is a high-severity vulnerability in Xmlsoft Libxml2, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2017-05-18.
- How severe is CVE-2017-9050?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2017-9050 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.