CVE-2020-13935

critical-risk

Published 2020-07-14

The payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payload lengths could trigger an infinite loop. Multiple requests with invalid payload lengths could lead to a denial of service.

Do I need to act?

91.7% chance of exploitation in next 30 days

EPSS score — higher than 8% of all CVEs

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.5/10 High

NETWORK / LOW complexity

Affected Products (20)

Tomcat

Affected Vendors

Debian Apache Oracle Mcafee Canonical Netapp Opensuse

References (34)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.html

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.html

Third Party Advisory https://kc.mcafee.com/corporate/index?page=content&id=SB10332

https://lists.apache.org/thread.html/r4e5d3c09f4dd2923191e972408b40fb8b42dbff0bc...

Mailing List https://lists.apache.org/thread.html/rd48c72bd3255bda87564d4da3791517c074d94f8a7...

Mailing List https://lists.debian.org/debian-lts-announce/2020/07/msg00017.html

Third Party Advisory https://security.netapp.com/advisory/ntap-20200724-0003/

Third Party Advisory https://usn.ubuntu.com/4448-1/

Third Party Advisory https://usn.ubuntu.com/4596-1/

Third Party Advisory https://www.debian.org/security/2020/dsa-4727

Patch https://www.oracle.com//security-alerts/cpujul2021.html

Patch https://www.oracle.com/security-alerts/cpuApr2021.html

Patch https://www.oracle.com/security-alerts/cpuapr2022.html

Patch https://www.oracle.com/security-alerts/cpujan2021.html

Patch https://www.oracle.com/security-alerts/cpujan2022.html

Patch https://www.oracle.com/security-alerts/cpuoct2020.html

Not Applicable https://www.oracle.com/security-alerts/cpuoct2021.html

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.html

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.html

Third Party Advisory https://kc.mcafee.com/corporate/index?page=content&id=SB10332

and 14 more references

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critical-risk

Severity 26/34 · High

Exploitability 20/34 · Moderate

Exposure 28/34 · Critical