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CVE-2016-0762

MEDIUMCVSS 5.9/10EPSS 7.68%

Last modified

CVE-2016-0762 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. 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. EPSS estimates a 7.68% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
5.9/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability
7.68%

93.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
ApacheTomcat>= 6.0.0, <= 6.0.45—
ApacheTomcat>= 7.0.0, <= 7.0.70—
ApacheTomcat>= 8.0, <= 8.0.36—
ApacheTomcat>= 8.5.0, <= 8.5.4—
ApacheTomcat9.0.0Milestone1
CanonicalUbuntu Linux16.04—
DebianDebian Linux8.0—
RedhatJboss Enterprise Web Server3.0.0—
RedhatEnterprise Linux Desktop7.0—
RedhatEnterprise Linux Eus7.4—
RedhatEnterprise Linux Eus7.5—
RedhatEnterprise Linux Eus7.6—
RedhatEnterprise Linux Eus7.7—
RedhatEnterprise Linux Server7.0—
RedhatEnterprise Linux Server Aus7.4—
RedhatEnterprise Linux Server Aus7.6—
RedhatEnterprise Linux Server Aus7.7—
RedhatEnterprise Linux Server Tus7.6—
RedhatEnterprise Linux Server Tus7.7—
RedhatEnterprise Linux Workstation7.0—
NetappOncommand InsightAll versions—
NetappOncommand ShiftAll versions—
NetappSnap Creator FrameworkAll versions—
OracleCommunications Diameter Signaling Router>= 8.0.0, <= 8.5.0—
OracleTekelec Platform Distribution>= 7.4.0, <= 7.7.1—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2016-0762?
CVE-2016-0762 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 7.68% probability of exploitation in the next 30 days.
How do I fix CVE-2016-0762?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-0762?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST