- ------------------------------------------------------------------------- Debian Security Advisory DSA-4855-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso February 17, 2021 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : openssl CVE ID : CVE-2019-1551 CVE-2021-23840 CVE-2021-23841 Debian Bug : 947949 Multiple vulnerabilities have been discovered in OpenSSL, a Secure Sockets Layer toolkit. An overflow bug in the x64_64 Montgomery squaring procedure, an integer overflow in CipherUpdate and a NULL pointer dereference flaw X509_issuer_and_serial_hash() were found, which could result in denial of service. Additional details can be found in the upstream advisories https://www.openssl.org/news/secadv/20191206.txt and https://www.openssl.org/news/secadv/20210216.txt . For the stable distribution (buster), these problems have been fixed in version 1.1.1d-0+deb10u5. We recommend that you upgrade your openssl packages. For the detailed security status of openssl please refer to its security tracker page at: https://security-tracker.debian.org/tracker/openssl Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: [email protected]
Debian: DSA-4855-1: openssl security update
February 17, 2021
Multiple vulnerabilities have been discovered in OpenSSL, a Secure Sockets Layer toolkit
Summary
Multiple vulnerabilities have been discovered in OpenSSL, a Secure Sockets Layer toolkit. An overflow bug in the x64_64 Montgomery squaring procedure, an integer overflow in CipherUpdate and a NULL pointer dereference flaw X509_issuer_and_serial_hash() were found, which could result in denial of service. Additional details can be found in the upstream advisories https://www.openssl.org/news/secadv/20191206.txt and https://www.openssl.org/news/secadv/20210216.txt . For the stable distribution (buster), these problems have been fixed in version 1.1.1d-0+deb10u5. We recommend that you upgrade your openssl packages. For the detailed security status of openssl please refer to its security tracker page at: https://security-tracker.debian.org/tracker/openssl Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: [email protected]
Debian Security Advisory DSA-4855-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso February 17, 2021 https://www.debian.org/security/faq
Severity
Package : openssl
CVE ID : CVE-2019-1551 CVE-2021-23840 CVE-2021-23841
Debian Bug : 947949