Vulnerability in Apache Tomcat
CVE-2016-0762
The Realm implementations in Apache Tomcat versions 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 did not process the supplied password if the supplied user name did not exist. This made a timing attack possible to determine valid user names. Note that the default configuration includes the LockOutRealm which makes exploitation of this vulnerability harder.
EPSS: 0.080 (94.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Apache Tomcat — versions 9.0.0
- Apache Software Foundation Tomcat — versions 6.0.0 to 6.0.45, 8.5.0 to 8.5.4, 7.0.0 to 7.0.70
- Netapp Oncommand_insight
- Netapp Oncommand_shift
- Netapp Snap_creator_framework
- Oracle Communications_diameter_signaling_router
- Oracle Tekelec_platform_distribution
- Canonical Ubuntu_linux — versions 16.04
- Debian Debian_linux — versions 8.0
- Redhat Enterprise_linux_desktop — versions 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (vdb-entry, x_refsource_SECTRACK, Broken Link)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- security@apache.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- security@apache.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- security@apache.org (vdb-entry, Broken Link, x_refsource_BID)
- security@apache.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- security@apache.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
Frequently asked questions
- What is CVE-2016-0762?
- CVE-2016-0762 is a medium-severity vulnerability in Apache Tomcat, classified under Observable Discrepancy. CVSS score: 5.9/10. Published 2017-08-10.
- How severe is CVE-2016-0762?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2016-0762 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.