CVE-2016-4970
published 2017-04-13CVE-2016-4970: handler/ssl/OpenSslEngine.java in Netty 4.0.x before 4.0.37.Final and 4.1.x before 4.1.1.Final allows remote attackers to cause a denial of service (infinite…
PriorityP341high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
11.26%
95.5th percentile
handler/ssl/OpenSslEngine.java in Netty 4.0.x before 4.0.37.Final and 4.1.x before 4.1.1.Final allows remote attackers to cause a denial of service (infinite loop).
Affected
10 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apache | cassandra | — | — |
| debian | netty | < netty 1:4.0.37-1 (bookworm) | netty 1:4.0.37-1 (bookworm) |
| netty | netty | >= 0 < 1:4.0.37-1 | 1:4.0.37-1 |
| netty | netty | >= 0 < 1:4.0.37-1 | 1:4.0.37-1 |
| netty | netty | >= 0 < 1:4.0.37-1 | 1:4.0.37-1 |
| netty | netty | >= 0 < 1:4.0.37-1 | 1:4.0.37-1 |
| netty | netty | >= 4.0.20 < 4.0.37 | 4.0.37 |
| netty | netty | >= 4.1.0 < 4.1.1 | 4.1.1 |
| redhat | jboss_data_grid | — | — |
| redhat | jboss_middleware_text-only_advisories | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.07.8HIGHAV:N/AC:L/Au:N/C:N/I:N/A:C
osv7.5HIGH
vendor_debian7.5HIGH
vendor_redhat7.5HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
Loop with Unreachable Exit Condition in Netty
ghsa·2022-05-13
CVE-2016-4970 [HIGH] CWE-835 Loop with Unreachable Exit Condition in Netty
Loop with Unreachable Exit Condition in Netty
handler/ssl/OpenSslEngine.java in Netty 4.0.x before 4.0.37.Final and 4.1.x before 4.1.1.Final allows remote attackers to cause a denial of service (infinite loop).
OSV
Loop with Unreachable Exit Condition in Netty
osv·2022-05-13
CVE-2016-4970 [HIGH] Loop with Unreachable Exit Condition in Netty
Loop with Unreachable Exit Condition in Netty
handler/ssl/OpenSslEngine.java in Netty 4.0.x before 4.0.37.Final and 4.1.x before 4.1.1.Final allows remote attackers to cause a denial of service (infinite loop).
OSV
CVE-2016-4970: handler/ssl/OpenSslEngine
osv·2017-04-13·CVSS 7.5
CVE-2016-4970 [HIGH] CVE-2016-4970: handler/ssl/OpenSslEngine
handler/ssl/OpenSslEngine.java in Netty 4.0.x before 4.0.37.Final and 4.1.x before 4.1.1.Final allows remote attackers to cause a denial of service (infinite loop).
Red Hat
netty: Infinite loop vulnerability when handling renegotiation using SslProvider.OpenSsl
vendor_redhat·2016-06-07·CVSS 7.5
CVE-2016-4970 [HIGH] CWE-835 netty: Infinite loop vulnerability when handling renegotiation using SslProvider.OpenSsl
netty: Infinite loop vulnerability when handling renegotiation using SslProvider.OpenSsl
handler/ssl/OpenSslEngine.java in Netty 4.0.x before 4.0.37.Final and 4.1.x before 4.1.1.Final allows remote attackers to cause a denial of service (infinite loop).
An infinite-loop vulnerability was discovered in Netty's OpenSslEngine handling of renegotiation. An attacker could exploit this flaw to cause a denial of service. Note: Netty is only vulnerable if renegotiation is enabled (default setting).
Package: netty (Red Hat BPM Suite 6) - Not affected
Package: netty (Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) Operational Tools) - Not affected
Package: netty (Red Hat JBoss BRMS 6) - Not affected
Package: netty (Red Hat JBoss Data Virtualization 6) - Not affected
Package: netty (Red H
Debian
CVE-2016-4970: netty - handler/ssl/OpenSslEngine.java in Netty 4.0.x before 4.0.37.Final and 4.1.x befo...
vendor_debian·2016·CVSS 7.5
CVE-2016-4970 [HIGH] CVE-2016-4970: netty - handler/ssl/OpenSslEngine.java in Netty 4.0.x before 4.0.37.Final and 4.1.x befo...
handler/ssl/OpenSslEngine.java in Netty 4.0.x before 4.0.37.Final and 4.1.x before 4.1.1.Final allows remote attackers to cause a denial of service (infinite loop).
Scope: local
bookworm: resolved (fixed in 1:4.0.37-1)
bullseye: resolved (fixed in 1:4.0.37-1)
forky: resolved (fixed in 1:4.0.37-1)
sid: resolved (fixed in 1:4.0.37-1)
trixie: resolved (fixed in 1:4.0.37-1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2016-4970 netty: Infinite loop vulnerability when handling renegotiation using SslProvider.OpenSsl [fedora-all]
bugzilla·2016-06-17·CVSS 7.5
CVE-2016-4970 [HIGH] CVE-2016-4970 netty: Infinite loop vulnerability when handling renegotiation using SslProvider.OpenSsl [fedora-all]
CVE-2016-4970 netty: Infinite loop vulnerability when handling renegotiation using SslProvider.OpenSsl [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue a
Bugzilla
CVE-2016-4970 netty: Infinite loop vulnerability when handling renegotiation using SslProvider.OpenSsl
bugzilla·2016-06-07·CVSS 7.5
CVE-2016-4970 [HIGH] CVE-2016-4970 netty: Infinite loop vulnerability when handling renegotiation using SslProvider.OpenSsl
CVE-2016-4970 netty: Infinite loop vulnerability when handling renegotiation using SslProvider.OpenSsl
Due to a bug in handling return code from openssl native calls, the SslHandler that uses OpenSslEngine can end up in an infinite loop and eat up all CPU cycles, which may lead to DoS of the system.
This can only happen if the server has renegotiation enabled (which is set as default). Only systems using SslProvider.OpenSsl are affected, that will be true if netty-tcnative is in the classpath and openssl is installed.
If netty-tcnative is linked against boringssl, the problem does not exist, since renegotiation is not supported in boringssl.
Versions affected: Netty 4.0.0.Final - 4.0.36.Final and 4.1.0.Final
Workaround:
Users can use -Djdk.tls.rejectClientInitiatedRenegotiation=true
http://netty.io/news/2016/06/07/4-0-37-Final.htmlhttp://netty.io/news/2016/06/07/4-1-1-Final.htmlhttp://rhn.redhat.com/errata/RHSA-2017-0179.htmlhttp://rhn.redhat.com/errata/RHSA-2017-1097.htmlhttp://www.securityfocus.com/bid/96540https://bugzilla.redhat.com/show_bug.cgi?id=1343616https://github.com/netty/netty/pull/5364https://lists.apache.org/thread.html/afaa5860e3a6d327eb96c3d82cbd2f5996de815a16854ed1ad310144%40%3Ccommits.cassandra.apache.org%3Ehttps://wiki.opendaylight.org/view/Security_Advisorieshttp://netty.io/news/2016/06/07/4-0-37-Final.htmlhttp://netty.io/news/2016/06/07/4-1-1-Final.htmlhttp://rhn.redhat.com/errata/RHSA-2017-0179.htmlhttp://rhn.redhat.com/errata/RHSA-2017-1097.htmlhttp://www.securityfocus.com/bid/96540https://bugzilla.redhat.com/show_bug.cgi?id=1343616https://github.com/netty/netty/pull/5364https://lists.apache.org/thread.html/afaa5860e3a6d327eb96c3d82cbd2f5996de815a16854ed1ad310144%40%3Ccommits.cassandra.apache.org%3Ehttps://wiki.opendaylight.org/view/Security_Advisories
2017-04-13
Published