Düşük CVSS 3.7 PoC var

CVE-2021-22890: Libcurl: güvenlik açığı

Yayın: 1 Nisan 2021 21:15 · Güncelleme: 6 Kasım 2026 09:46

Açıklama (NVD)

curl 7.63.0 to and including 7.75.0 includes vulnerability that allows a malicious HTTPS proxy to MITM a connection due to bad handling of TLS 1.3 session tickets. When using a HTTPS proxy and TLS 1.3, libcurl can confuse session tickets arriving from the HTTPS proxy but work as if they arrived from the remote server and then wrongly "short-cut" the host handshake. When confusing the tickets, a HTTPS proxy can trick libcurl to use the wrong session ticket resume for the host and thereby circumvent the server TLS certificate check and make a MITM attack to be possible to perform unnoticed. Note that such a malicious HTTPS proxy needs to provide a certificate that curl will accept for the MITMed server for an attack to work - unless curl has been told to ignore the server certificate check.

Özet bilgiler

Ürün: Haxx Libcurl
CVSS v3.1: 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS: %3,06 (yüzdelik 88)
CWE: CWE-300
Yama: Mevcut

Etkilenen sürümler

Ürün	Başlangıç	Bitiş	Düzeltildi
haxx-libcurl	7.63.0	7.75.0	—
fedoraproject-fedora	32	32	—
fedoraproject-fedora	33	33	—
fedoraproject-fedora	34	34	—
netapp-hci-management-node	—	—	—
netapp-solidfire	—	—	—
netapp-hci-storage-node	—	—	—
broadcom-fabric-operating-system	—	—	—
debian-debian-linux	9.0	9.0	—
siemens-sinec-infrastructure-network-services	—	—	1.0.1.1
oracle-communications-billing-and-revenue-management	12.0.0.3.0	12.0.0.3.0	—
oracle-essbase	21.2	21.2	—
splunk-universal-forwarder	8.2.0	—	8.2.12
splunk-universal-forwarder	9.0.0	—	9.0.6
splunk-universal-forwarder	9.1.0	9.1.0	—

Kaynaklar

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