Out-of-bounds Read in Xpdfreader Xpdf
CVE-2018-18456
The function Object::isName() in Object.h (called from Gfx::opSetFillColorN) in Xpdf 4.00 allows remote attackers to cause a denial of service (stack-based buffer over-read) via a crafted pdf file, as demonstrated by pdftoppm.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.010 (60.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Xpdfreader Xpdf — versions 4.00
Weakness classification (CWE)
Public proof-of-concept exploits
References
- forum.xpdfreader.com/viewtopic.php (Third Party Advisory)
- github.com/TeamSeri0us/pocs/tree/master/xpdf/2018_10_16/pdftoppm (Third Party Advisory)
Frequently asked questions
- What is CVE-2018-18456?
- CVE-2018-18456 is a medium-severity vulnerability in Xpdfreader Xpdf, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2018-10-18.
- How severe is CVE-2018-18456?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2018-18456 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.