CVSS: 5.9EPSS: 0%CPEs: 38EXPL: 0CVE-2021-23841 – Null pointer deref in X509_issuer_and_serial_hash()
https://notcve.org/view.php?id=CVE-2021-23841
The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate. However it fails to correctly handle any errors that may occur while parsing the issuer field (which might occur if the issuer field is maliciously constructed). This may subsequently result in a NULL pointer deref and a crash leading to a potential denial of service attack. The function X509_issuer_and_serial_hash() is never directly called by OpenSSL itself so applications are only vulnerable if they use this function directly and they use it on certificates that may have been obtained from untrusted sources. OpenSSL versions 1.1.1i and below are affected by this issue. • http://seclists.org/fulldisclosure/2021/May/67 http://seclists.org/fulldisclosure/2021/May/68 http://seclists.org/fulldisclosure/2021/May/70 https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=122a19ab48091c657f7cb1fb3af9fc07bd557bbf https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=8252ee4d90f3f2004d3d0aeeed003ad49c9a7807 https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44846 https://security.gentoo.org/gls • CWE-476: NULL Pointer Dereference •
CVSS: 9.3EPSS: 0%CPEs: 20EXPL: 0CVE-2021-1805 – Apple macOS process_token_BindQueryBufferMultiple Out-Of-Bounds Write Privilege Escalation Vulnerability
https://notcve.org/view.php?id=CVE-2021-1805
An out-of-bounds write was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.2.1, macOS Catalina 10.15.7 Supplemental Update, macOS Mojave 10.14.6 Security Update 2021-002. An application may be able to execute arbitrary code with kernel privileges. Se abordó una escritura fuera de límites con una comprobación de la entrada mejorada. Este problema es corregido en macOS Big Sur versión 11.2.1, Supplemental Update de macOS Catalina versión 10.15.7, Security Update de macOS Mojave versión 10.14.6 2021-002. • http://seclists.org/fulldisclosure/2021/Apr/54 https://support.apple.com/en-us/HT212177 https://support.apple.com/kb/HT212327 • CWE-787: Out-of-bounds Write •
CVSS: 7.8EPSS: 0%CPEs: 18EXPL: 0CVE-2021-1806 – Apple macOS process_token_BlitLibSetup2D Time-Of-Check Time-Of-Use Privilege Escalation Vulnerability
https://notcve.org/view.php?id=CVE-2021-1806
A race condition was addressed with additional validation. This issue is fixed in macOS Big Sur 11.2.1, macOS Catalina 10.15.7 Supplemental Update, macOS Mojave 10.14.6 Security Update 2021-002. An application may be able to execute arbitrary code with kernel privileges. Se abordó una condición de carrera con una comprobación adicional. Este problema es corregido en macOS Big Sur versión 11.2.1, Supplemental Update de macOS Catalina versión 10.15.7, Security Update de macOS Mojave versión 10.14.6 2021-002. • http://seclists.org/fulldisclosure/2021/Apr/54 https://support.apple.com/en-us/HT212177 https://support.apple.com/kb/HT212327 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 7.8EPSS: 0%CPEs: 22EXPL: 0CVE-2020-29624 – Apple CoreText libFontParser.dylib Stack Corruption
https://notcve.org/view.php?id=CVE-2020-29624
A memory corruption issue existed in the processing of font files. This issue was addressed with improved input validation. This issue is fixed in watchOS 7.2, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, iOS 14.3 and iPadOS 14.3, tvOS 14.3. Processing a maliciously crafted font file may lead to arbitrary code execution. Se presentó un problema de corrupción de memoria en un procesamiento de archivos de fuentes. • https://support.apple.com/en-us/HT212003 https://support.apple.com/en-us/HT212005 https://support.apple.com/en-us/HT212009 https://support.apple.com/en-us/HT212011 • CWE-787: Out-of-bounds Write •
CVSS: 7.8EPSS: 0%CPEs: 19EXPL: 0CVE-2021-1775 – Apple macOS libFontParser TTF Parsing Integer Underflow Information Disclosure Vulnerability
https://notcve.org/view.php?id=CVE-2021-1775
This issue was addressed by removing the vulnerable code. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave. Processing a maliciously crafted font may lead to arbitrary code execution. Este problema es abordado al eliminar el código vulnerable. Este problema es corregido en macOS Big Sur versión 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave. • https://support.apple.com/en-us/HT212147 •