CVSS: 7.5EPSS: 0%CPEs: 40EXPL: 1CVE-2020-8286 – curl: Inferior OCSP verification
https://notcve.org/view.php?id=CVE-2020-8286
curl 7.41.0 through 7.73.0 is vulnerable to an improper check for certificate revocation due to insufficient verification of the OCSP response. curl versiones 7.41.0 hasta 7.73.0, es vulnerable a una comprobación inapropiada para la revocación del certificado debido a una verificación insuficiente de la respuesta OCSP Libcurl offers "OCSP stapling" via the CURLOPT_SSL_VERIFYSTATUS option. When set, libcurl verifies the OCSP response that a server responds with as part of the TLS handshake. It then aborts the TLS negotiation if something is wrong with the response. The same feature can be enabled with --cert-status using the curl tool. As part of the OCSP response verification, a client should verify that the response is indeed set out for the correct certificate. • http://seclists.org/fulldisclosure/2021/Apr/50 http://seclists.org/fulldisclosure/2021/Apr/51 http://seclists.org/fulldisclosure/2021/Apr/54 https://cert-portal.siemens.com/productcert/pdf/ssa-200951.pdf https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://curl.se/docs/CVE-2020-8286.html https://hackerone.com/reports/1048457 https://lists.debian.org/debian-lts-announce/2020/12/msg00029.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fe • CWE-295: Improper Certificate Validation •
CVSS: 5.9EPSS: 0%CPEs: 75EXPL: 1CVE-2020-1971 – EDIPARTYNAME NULL pointer dereference
https://notcve.org/view.php?id=CVE-2020-1971
The X.509 GeneralName type is a generic type for representing different types of names. One of those name types is known as EDIPartyName. OpenSSL provides a function GENERAL_NAME_cmp which compares different instances of a GENERAL_NAME to see if they are equal or not. This function behaves incorrectly when both GENERAL_NAMEs contain an EDIPARTYNAME. A NULL pointer dereference and a crash may occur leading to a possible denial of service attack. • https://github.com/MBHudson/CVE-2020-1971 http://www.openwall.com/lists/oss-security/2021/09/14/2 https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=2154ab83e14ede338d2ede9bbe5cdfce5d5a6c9e https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=f960d81215ebf3f65e03d4d5d857fb9b666d6920 https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44676 https://lists.apache.org/thread.html/r63c6f2dd363d9b514d0a4bcf624580616a679898cc14c109a49b7 • CWE-476: NULL Pointer Dereference •
CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 0CVE-2020-29573 – glibc: stack-based buffer overflow if the input to any of the printf family of functions is an 80-bit long double with a non-canonical bit pattern
https://notcve.org/view.php?id=CVE-2020-29573
sysdeps/i386/ldbl2mpn.c in the GNU C Library (aka glibc or libc6) before 2.23 on x86 targets has a stack-based buffer overflow if the input to any of the printf family of functions is an 80-bit long double with a non-canonical bit pattern, as seen when passing a \x00\x04\x00\x00\x00\x00\x00\x00\x00\x04 value to sprintf. NOTE: the issue does not affect glibc by default in 2016 or later (i.e., 2.23 or later) because of commits made in 2015 for inlining of C99 math functions through use of GCC built-ins. In other words, the reference to 2.23 is intentional despite the mention of "Fixed for glibc 2.33" in the 26649 reference. El archivo sysdeps/i386/ldbl2mpn.c en la GNU C Library (también se conoce como glibc o libc6) versiones anteriores a 2.23 en objetivos x86 presenta un desbordamiento de búfer en la región stack de la memoria si la entrada a cualquiera de la familia funciones printf es un doble longitud de 80 bits con un patrón de bits no canónico, como se ve al pasar un valor \x00\x04\x00\x00\x00\x00\x00\x00\x00\x04 a sprintf. NOTA: la cuestión no afecta a la glibc por defecto en 2016 o más tarde (es decir, 2,23 o más tarde), debido a los compromisos contraídos en 2015 para alinear las funciones matemáticas del C99 mediante el uso de los elementos incorporados del GCC. • https://security.gentoo.org/glsa/202101-20 https://security.netapp.com/advisory/ntap-20210122-0004 https://sourceware.org/bugzilla/show_bug.cgi?id=26649 https://sourceware.org/pipermail/libc-alpha/2020-September/117779.html https://access.redhat.com/security/cve/CVE-2020-29573 https://bugzilla.redhat.com/show_bug.cgi?id=1905213 • CWE-121: Stack-based Buffer Overflow CWE-787: Out-of-bounds Write •
CVSS: 8.3EPSS: 3%CPEs: 11EXPL: 1CVE-2020-14305 – kernel: memory corruption in Voice over IP nf_conntrack_h323 module
https://notcve.org/view.php?id=CVE-2020-14305
An out-of-bounds memory write flaw was found in how the Linux kernel’s Voice Over IP H.323 connection tracking functionality handled connections on ipv6 port 1720. This flaw allows an unauthenticated remote user to crash the system, causing a denial of service. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Se encontró un fallo de escritura de memoria fuera de límites en la manera en que la funcionalidad connection tracking Voice Over IP H.323 del kernel de Linux, manejaba las conexiones en el puerto ipv6 1720. Este fallo permite a un usuario remoto no autenticado bloquear el sistema, causando una denegación de servicio. • https://bugs.openvz.org/browse/OVZ-7188 https://bugzilla.redhat.com/show_bug.cgi?id=1850716 https://patchwork.ozlabs.org/project/netfilter-devel/patch/c2385b5c-309c-cc64-2e10-a0ef62897502%40virtuozzo.com https://security.netapp.com/advisory/ntap-20201210-0004 https://access.redhat.com/security/cve/CVE-2020-14305 • CWE-787: Out-of-bounds Write •
CVSS: 7.0EPSS: 0%CPEs: 13EXPL: 1CVE-2020-29368 – kernel: the copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check
https://notcve.org/view.php?id=CVE-2020-29368
An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check, aka CID-c444eb564fb1. Se detectó un problema en la función __split_huge_pmd en el archivo mm/huge_memory.c en el kernel de Linux versiones anteriores a 5.7.5. La implementación copy-on-write puede otorgar acceso de escritura no previsto debido a una condición de carrera en una comprobación de conteo de mapas THP, también se conoce como CID-c444eb564fb1 An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel. The copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check. • https://bugs.chromium.org/p/project-zero/issues/detail?id=2045 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.5 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c444eb564fb16645c172d550359cb3d75fe8a040 https://security.netapp.com/advisory/ntap-20210108-0002 https://access.redhat.com/security/cve/CVE-2020-29368 https://bugzilla.redhat.com/show_bug.cgi?id=1903244 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •