VDB
RHSA-2021%3A3743
RHSA-2021%3A3743
PUBLISHED
CVSS 7.5 HIGH
A flaw was found in Apache Tomcat. When Tomcat was configured to use NIO+OpenSSL or NIO2+OpenSSL for TLS, a specially crafted packet can trigger an infinite loop, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat JBoss Web Server 5 |
Timeline
- Oct 6, 2021 CVE Published
- May 1, 2026 Distribution Patch
- May 1, 2026 Distribution Patch
- May 1, 2026 Security Advisory
- May 1, 2026 Security Advisory
- May 14, 2026 CVE Updated
References
- https://access.redhat.com/errata/RHSA-2021:3743 advisory
- https://access.redhat.com/security/updates/classification/#important advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2004820 issue
- https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_3743.json advisory
- https://access.redhat.com/security/cve/CVE-2021-41079 advisory
- https://www.cve.org/CVERecord?id=CVE-2021-41079 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2021-41079 advisory
- https://lists.apache.org/thread.html/rccdef0349fdf4fb73a4e4403095446d7fe6264e0a58e2df5c6799434%40%3Cannounce.tomcat.apache.org%3E advisory
- https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.0.4 advisory
- https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.64 advisory
- https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.44 advisory