Vulnerability in Apache Tomcat
CVE-2016-9774
The postinst script in the tomcat6 package before 6.0.45+dfsg-1~deb7u4 on Debian wheezy, before 6.0.35-1ubuntu3.9 on Ubuntu 12.04 LTS and on Ubuntu 14.04 LTS; the tomcat7 package before 7.0.28-4+deb7u8 on Debian wheezy, before 7.0.56-3+deb8u6 on Debian jessie, before 7.0.52-1ubuntu0.8 on Ubuntu 14.04 LTS, and on Ubuntu 12.04 LTS, 16.04 LTS, and 16.10; and the tomcat8 package before 8.0.14-1+deb8u5 on Debian jessie, before 8.0.32-1ubuntu1.3 on Ubuntu 16.04 LTS, before 8.0.37-1ubuntu0.1 on Ubuntu 16.10, and before 8.0.38-2ubuntu1 on Ubuntu 17.04 might allow local users with access to the tomcat account to obtain sensitive information or gain root privileges via a symlink attack on the Catalina localhost directory.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (53.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Apache Tomcat — versions 6.0, 7.0, 8.0
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 7.0, 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.ubuntu.com/usn/USN-3177-2 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/94643 (VDB Entry, Third Party Advisory, vdb-entry)
- www.debian.org/security/2016/dsa-3739 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2016/dsa-3738 (vendor-advisory, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/12/02/5 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/12/02/10 (mailing-list, Mailing List, Third Party Advisory)
- www.ubuntu.com/usn/USN-3177-1 (vendor-advisory, Third Party Advisory)
- security.netapp.com/advisory/ntap-20180731-0002/
- bugs.debian.org/cgi-bin/bugreport.cgi (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-9774?
- CVE-2016-9774 is a high-severity vulnerability in Apache Tomcat, classified under Improper Link Resolution Before File Access. CVSS score: 7.8/10. Published 2017-03-23.
- How severe is CVE-2016-9774?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2016-9774 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.