HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack)

A flaw was found in handling multiplexed streams in the HTTP/2 protocol. A client can repeatedly make a request for a new multiplex stream and immediately send an RSTSTREAM frame to cancel it. This creates extra work for the server setting up and tearing down the streams while not hitting any...

golang: net/http, x/net/http2: rapid stream resets can cause excessive work (CVE-2023-44487)

A flaw was found in handling multiplexed streams in the HTTP/2 protocol. A client can repeatedly make a request for a new multiplex stream and immediately send an RSTSTREAM frame to cancel it. This creates extra work for the server setting up and tearing down the streams while not hitting any...

HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack)

A flaw was found in handling multiplexed streams in the HTTP/2 protocol. A client can repeatedly make a request for a new multiplex stream and immediately send an RSTSTREAM frame to cancel it. This creates extra work for the server setting up and tearing down the streams while not hitting any...

CVE-2023-38552

creationtimestamp| type| source ---|---|--- 2023-10-18 07:33:33+00:00| seen| https://t.me/cibsecurity/72485 2024-11-14 12:00:00+00:00| seen| https://www.cisa.gov/news-events/ics-advisories/icsa-24-319-08 2026-03-19 00:00:00+00:00| seen| https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0316/...

CVE-2023-39331

creationtimestamp| type| source ---|---|--- 2023-10-18 07:33:25+00:00| seen| https://t.me/cibsecurity/72478 2024-11-14 12:00:00+00:00| seen| https://www.cisa.gov/news-events/ics-advisories/icsa-24-319-08...

CVE-2023-39332

creationtimestamp| type| source ---|---|--- 2023-10-18 07:33:24+00:00| seen| https://t.me/cibsecurity/72477 2024-11-14 12:00:00+00:00| seen| https://www.cisa.gov/news-events/ics-advisories/icsa-24-319-08...

CVE-2023-32004

creationtimestamp| type| source ---|---|--- 2023-10-18 07:33:24+00:00| seen| https://t.me/cibsecurity/72477 2024-11-14 12:00:00+00:00| seen| https://www.cisa.gov/news-events/ics-advisories/icsa-24-319-08 2025-05-08 16:23:53+00:00| seen| https://t.me/DarkWebInformerCVEAlerts/15554...

CVE-2023-30584

creationtimestamp| type| source ---|---|--- 2023-10-18 07:33:24+00:00| seen| https://t.me/cibsecurity/72477 2023-10-18 07:33:25+00:00| seen| https://t.me/cibsecurity/72478 2024-09-07 19:20:37+00:00| seen| https://t.me/cvedetector/5033 2024-11-14 12:00:00+00:00| seen|...

Cisco IOS XE vulnerability widely exploited in the wild

An authentication bypass affecting Cisco IOS X was disclosed on October 16, 2023. Researchers have found since then that the vulnerability is widely being exploited in the wild to help install implants on affected switches and routers. Cisco IOS XE is a universally deployed Internetworking...

HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack)

A flaw was found in handling multiplexed streams in the HTTP/2 protocol. A client can repeatedly make a request for a new multiplex stream and immediately send an RSTSTREAM frame to cancel it. This creates extra work for the server setting up and tearing down the streams while not hitting any...

CISA Releases Two Industrial Control Systems Advisories

CISA released two Industrial Control Systems ICS advisories on October 17, 2023. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS. ICSA-23-290-01 Schneider Electric EcoStruxure Power Monitoring Expert and Power Operation...

AlmaLinux 8 : dotnet7.0 (ALSA-2023:5709)

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2023:5709 advisory. - The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild ...

CISA Adds One Known Exploited Vulnerability to Catalog

CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2023-20198 Cisco IOS XE Web UI Privilege Escalation Vulnerabilitylink is external These types of vulnerabilities are frequent attack vectors for malicious cyber actor...

Threat Actors Exploit Atlassian Confluence CVE-2023-22515 for Initial Access to Networks

SUMMARY The Cybersecurity and Infrastructure Security Agency CISA, Federal Bureau of Investigation FBI, and Multi-State Information Sharing and Analysis Center MS-ISAC are releasing this joint Cybersecurity Advisory CSA in response to the active exploitation of CVE-2023-22515. This recently...

HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack)

A flaw was found in handling multiplexed streams in the HTTP/2 protocol. A client can repeatedly make a request for a new multiplex stream and immediately send an RSTSTREAM frame to cancel it. This creates extra work for the server setting up and tearing down the streams while not hitting any...

HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack)

A flaw was found in handling multiplexed streams in the HTTP/2 protocol. A client can repeatedly make a request for a new multiplex stream and immediately send an RSTSTREAM frame to cancel it. This creates extra work for the server setting up and tearing down the streams while not hitting any...

HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack)

A flaw was found in handling multiplexed streams in the HTTP/2 protocol. A client can repeatedly make a request for a new multiplex stream and immediately send an RSTSTREAM frame to cancel it. This creates extra work for the server setting up and tearing down the streams while not hitting any...

HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack)

A flaw was found in handling multiplexed streams in the HTTP/2 protocol. A client can repeatedly make a request for a new multiplex stream and immediately send an RSTSTREAM frame to cancel it. This creates extra work for the server setting up and tearing down the streams while not hitting any...

A week in security (October 9 - October 15)

Last week on Malwarebytes Labs: Explained: Quishing Update now! Atlassian Confluence vulnerability is being actively exploited Giant health insurer struck by ransomware didn't have antivirus protection Ransomware review: October 2023 Stalkerware activity drops as glaring spying problem is reveale...

Fedora 38 : nghttp2 (2023-ed2642fd58)

The remote Fedora 38 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-ed2642fd58 advisory. - fix HTTP/2 Rapid Reset CVE-2023-44487 Tenable has extracted the preceding description block directly from the Fedora security advisory. Note that...