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Integer overflow in the MDC2_Update function in crypto/mdc2/mdc2dgst.c in OpenSSL before 1.1.0 allows remote attackers to cause a denial of service (out-of-bounds write and application crash) or possibly have unspecified other impact via unknown vectors.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Aix 5.3 Openssl_advisory21 | — | — | Dec 19, 2016 | Sep 16, 2016 |
| Aix 6.1 Openssl_advisory21 | — | — | Dec 19, 2016 | Sep 16, 2016 |
| Aix 7.1 Openssl_advisory21 | — | — | Dec 19, 2016 | Sep 16, 2016 |
| Aix 7.2 Openssl_advisory21 | — | — | Dec 19, 2016 | Sep 16, 2016 |
| Alpine Linux | — | Upgrade openssl | Aug 30, 2017 | Sep 16, 2016 |
| Apple Osx Openssl | — | Upgrade macOS to the latest version | Dec 16, 2016 | Sep 16, 2016 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Sep 16, 2016 |
| Cisco Anyconnect | — | Upgrade to the latest version of Cisco Secure Client to resolve this vulnerability. | Dec 16, 2020 | Sep 16, 2016 |
| Debian | — | Upgrade openssl | Sep 22, 2016 | Sep 16, 2016 |
| Freebsd | — | Upgrade FreeBSDUpgrade openssl-develUpgrade linux-c6-opensslUpgrade openssl | Nov 14, 2016 | Sep 22, 2016 |
| Http Openssl | — | Upgrade to the latest version of OpenSSL | Sep 23, 2016 | Sep 16, 2016 |
| Huawei Vrp | — | Contact Huawei TAC to request the upgrades | Apr 2, 2026 | Mar 22, 2017 |
| Ibm Aix | — | Apply the fix or workaround for openssl_advisory21 | Nov 30, 2017 | Sep 16, 2016 |
| Oracle Solaris | — | Upgrade database/mysql-55 to version 5.5.54-0.175.3.19.0.2.0 on Solaris 11.3Upgrade database/mysql-57/client to version 5.7.23-0.175.3.35.0.5.0 on Solaris 11.3Upgrade database/mysql-57/tests to version 5.7.23-0.175.3.35.0.5.0 on Solaris 11.3Upgrade runtime/perl-threaded-512 to version 5.12.5-0.175.3.19.0.2.0 on Solaris 11.3Upgrade database/mysql-57 to version 5.7.23-0.175.3.35.0.5.0 on Solaris 11.3Upgrade database/mysql-55/tests to version 5.5.54-0.175.3.19.0.2.0 on Solaris 11.3Upgrade database/mysql-56/tests to version 5.6.35-0.175.3.19.0.2.0 on Solaris 11.3Upgrade library/security/openssl to version 1.0.1.21-0.175.3.13.0.4.0 on Solaris 11.3Upgrade database/mysql-56/client to version 5.6.35-0.175.3.19.0.2.0 on Solaris 11.3Upgrade library/security/openssl/openssl-fips-140 to version 2.0.6-0.175.3.13.0.4.0 on Solaris 11.3Upgrade database/mysql-56/library to version 5.6.35-0.175.3.19.0.2.0 on Solaris 11.3Upgrade runtime/perl-512 to version 5.12.5-0.175.3.19.0.2.0 on Solaris 11.3Upgrade database/mysql-57/library to version 5.7.23-0.175.3.35.0.5.0 on Solaris 11.3Upgrade database/mysql-57/embedded to version 5.7.23-0.175.3.35.0.5.0 on Solaris 11.3Upgrade database/mysql-56 to version 5.6.35-0.175.3.19.0.2.0 on Solaris 11.3Upgrade database/mysql-55/library to version 5.5.54-0.175.3.19.0.2.0 on Solaris 11.3Upgrade database/mysql-55/client to version 5.5.54-0.175.3.19.0.2.0 on Solaris 11.3 | May 29, 2017 | Sep 16, 2016 |
| Pulse Secure Pulse Connect Secure | — | Update Pulse Connect Secure to version 8.1R11Update Pulse Connect Secure to version 8.2R6Update Pulse Connect Secure to version 8.1R11.1 | Oct 28, 2020 | Sep 16, 2016 |
| Suse | — | Upgrade openssl-1_0_0-docUpgrade libopenssl1_0_0-hmac-32bitUpgrade libopenssl1_0_0-x86Upgrade libopenssl1_0_0Upgrade libopenssl10Upgrade libopenssl0_9_8-32bitUpgrade libopenssl0_9_8-x86Upgrade libopenssl1_1-hmacUpgrade libopenssl1_0_0-hmacUpgrade compat-openssl097g-32bitUpgrade libopenssl-develUpgrade libopenssl-1_0_0-develUpgrade libopenssl-1_1-develUpgrade sles12-docker-imageUpgrade libopenssl1_1-32bitUpgrade openssl1Upgrade libopenssl1-develUpgrade openssl-1_1Upgrade libopenssl0_9_8-hmac-32bitUpgrade openssl-docUpgrade libopenssl-devel-32bitUpgrade libopenssl1_1-hmac-32bitUpgrade sles12sp1-docker-imageUpgrade libopenssl1_0_0-32bitUpgrade libopenssl1_1Upgrade libopenssl0_9_8Upgrade opensslUpgrade libopenssl0_9_8-hmacUpgrade libopenssl-1_1-devel-32bitUpgrade openssl-1_0_0Upgrade compat-openssl097gUpgrade openssl1-doc | Sep 27, 2016 | Sep 16, 2016 |
| Ubuntu | — | Upgrade libssl1.0.0 | Sep 22, 2016 | Sep 16, 2016 |
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