CVSS: 4.3EPSS: 0%CPEs: 15EXPL: 1CVE-2021-22890 – curl: TLS 1.3 session ticket mix-up with HTTPS proxy host
https://notcve.org/view.php?id=CVE-2021-22890
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. curl versiones 7.63.0 hasta 7.75.0 incluyéndola, incluye una vulnerabilidad que permite que un proxy HTTPS malicioso acceda a una conexión MITM debido al manejo inapropiado de los tickets de sesión de TLS versión 1.3. Cuando se usa un proxy HTTPS y TLS 1.3, libcurl puede confundir los tickets de sesión que llegan del proxy HTTPS pero funciona como si llegaran del servidor remoto y luego "short-cut" incorrectamente el protocolo de enlace del host. • https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://curl.se/docs/CVE-2021-22890.html https://hackerone.com/reports/1129529 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2ZC5BMIOKLBQJSFCHEDN2G2C2SH274BP https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITVWPVGLFISU5BJC2BXBRYSDXTXE2YGC https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KQUIOYX2KUU6FIUZVB5WWZ6JHSSYSQWJ https://security.gen • CWE-290: Authentication Bypass by Spoofing CWE-300: Channel Accessible by Non-Endpoint •
CVSS: 7.0EPSS: 0%CPEs: 14EXPL: 0CVE-2021-20271 – rpm: Signature checks bypass via corrupted rpm package
https://notcve.org/view.php?id=CVE-2021-20271
A flaw was found in RPM's signature check functionality when reading a package file. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package, whose signature header was modified, to cause RPM database corruption and execute code. The highest threat from this vulnerability is to data integrity, confidentiality, and system availability. Se detectó un fallo en la funcionalidad de comprobación de firmas de RPM cuando se lee un archivo de paquete. Este fallo permite a un atacante que pueda convencer a una víctima de instalar un paquete aparentemente verificable, cuyo encabezado de firma fue modificado, causar una corrupción de la base de datos de RPM y ejecutar código. • https://bugzilla.redhat.com/show_bug.cgi?id=1934125 https://github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMGXO3W6DHPO62GJ4VVF5DEUX5DRUR5K https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHRPNBCRPDJHHQE3MBPSZK4H7X2IM7AC https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YILPBTPSBRYL4POBI3F4YUSVPSOQNJBY https://security.gentoo.org/glsa/ • CWE-345: Insufficient Verification of Data Authenticity •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0CVE-2021-3446
https://notcve.org/view.php?id=CVE-2021-3446
A flaw was found in libtpms in versions before 0.8.2. The commonly used integration of libtpms with OpenSSL contained a vulnerability related to the returned IV (initialization vector) when certain symmetric ciphers were used. Instead of returning the last IV it returned the initial IV to the caller, thus weakening the subsequent encryption and decryption steps. The highest threat from this vulnerability is to data confidentiality. Se encontró un fallo en libtpms en versiones anteriores a 0.8.2. • https://bugzilla.redhat.com/show_bug.cgi?id=1939664 • CWE-327: Use of a Broken or Risky Cryptographic Algorithm CWE-330: Use of Insufficiently Random Values •
CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 1CVE-2021-3443
https://notcve.org/view.php?id=CVE-2021-3443
A NULL pointer dereference flaw was found in the way Jasper versions before 2.0.27 handled component references in the JP2 image format decoder. A specially crafted JP2 image file could cause an application using the Jasper library to crash when opened. Se encontró un fallo de desreferencia de puntero NULL en la manera en que Jasper versiones anteriores a 2.0.27, manejaban las referencias de componentes en el decodificador de formato de imagen JP2. Un archivo de imagen JP2 especialmente diseñado podría causar que una aplicación que usa la biblioteca Jasper se bloquee al abrirse • https://bugzilla.redhat.com/show_bug.cgi?id=1939233 • CWE-476: NULL Pointer Dereference •
CVSS: 7.5EPSS: 0%CPEs: 8EXPL: 0CVE-2020-27840
https://notcve.org/view.php?id=CVE-2020-27840
A flaw was found in samba. Spaces used in a string around a domain name (DN), while supposed to be ignored, can cause invalid DN strings with spaces to instead write a zero-byte into out-of-bounds memory, resulting in a crash. The highest threat from this vulnerability is to system availability. Se ha encontrado un fallo en samba. Los espacios usados en una cadena alrededor de un nombre de dominio (DN), aunque se supone que deben ser ignorados, pueden causar cadenas DN no válidas con espacios en lugar de escribir un byte cero en la memoria fuera de límites, resultando en un bloqueo. • https://bugzilla.redhat.com/show_bug.cgi?id=1941400 https://lists.debian.org/debian-lts-announce/2021/03/msg00036.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VLZ74IF2N75VQSIHBL4B3P5WKWQCXSRY https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X5J3B6PN5XMXF3OHYBNHDKZ3XFSUGY4L https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZXP3ONIY6MB4C5LDZV4YL5KJCES3UX24 https://security.gentoo.org/glsa/202105-22 ht • CWE-125: Out-of-bounds Read •