Out-of-bounds Read in Libtiff
CVE-2017-9935
In LibTIFF 4.0.8, there is a heap-based buffer overflow in the t2p_write_pdf function in tools/tiff2pdf.c. This heap overflow could lead to different damages. For example, a crafted TIFF document can lead to an out-of-bounds read in TIFFCleanup, an invalid free in TIFFClose or t2p_free, memory corruption in t2p_readwrite_pdf_image, or a double free in t2p_free. Given these possibilities, it probably could cause arbitrary code execution.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.039 (90.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.039 · newest: 0.039 · change: 0.000
Affected products
- Libtiff
- Canonical Ubuntu Linux — versions 14.04, 16.04, 17.10
- Debian Linux — versions 7.0, 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- usn.ubuntu.com/3606-1/ (vendor-advisory, Third Party Advisory)
- bugzilla.maptools.org/show_bug.cgi (Exploit, Patch, Third Party Advisory, Issue Tracking)
- lists.debian.org/debian-lts-announce/2017/12/msg00008.html (mailing-list, Mailing List, Third Party Advisory)
- www.securityfocus.com/bid/99296 (VDB Entry, Third Party Advisory, vdb-entry)
- www.debian.org/security/2018/dsa-4100 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-9935?
- CVE-2017-9935 is a high-severity vulnerability in Libtiff, classified under Out-of-bounds Read. CVSS score: 8.8/10. Published 2017-06-26.
- How severe is CVE-2017-9935?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2017-9935 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.