Test ID:	1.3.6.1.4.1.25623.1.0.892563
Category:	Debian Local Security Checks
Title:	Debian: Security Advisory (DLA-2563-1)
Summary:	The remote host is missing an update for the Debian 'openssl' package(s) announced via the DLA-2563-1 advisory.
Description:	Summary: The remote host is missing an update for the Debian 'openssl' package(s) announced via the DLA-2563-1 advisory. Vulnerability Insight: It was discovered that there were two issues in the openssl cryptographic system: CVE-2021-23840 Calls to EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate may overflow the output length argument in some cases where the input length is close to the maximum permissible length for an integer on the platform. In such cases the return value from the function call will be 1 (indicating success), but the output length value will be negative. This could cause applications to behave incorrectly or crash. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x). 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. For Debian 9 Stretch, these problems have been fixed in version 1.1.0l-1~ deb9u3. We recommend that you upgrade your openssl packages. Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references] Affected Software/OS: 'openssl' package(s) on Debian 9. Solution: Please install the updated package(s). CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-23840 https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=6a51b9e1d0cf0bf8515f7201b68fb0a3482b3dc1 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=9b1129239f3ebb1d1c98ce9ed41d5c9476c47cb2 https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44846 https://kc.mcafee.com/corporate/index?page=content&id=SB10366 https://security.netapp.com/advisory/ntap-20210219-0009/ https://www.openssl.org/news/secadv/20210216.txt https://www.tenable.com/security/tns-2021-03 https://www.tenable.com/security/tns-2021-09 https://www.tenable.com/security/tns-2021-10 Debian Security Information: DSA-4855 (Google Search) https://www.debian.org/security/2021/dsa-4855 https://security.gentoo.org/glsa/202103-03 https://www.oracle.com//security-alerts/cpujul2021.html https://www.oracle.com/security-alerts/cpuApr2021.html https://www.oracle.com/security-alerts/cpuapr2022.html https://www.oracle.com/security-alerts/cpujan2022.html https://www.oracle.com/security-alerts/cpuoct2021.html https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E Common Vulnerability Exposure (CVE) ID: CVE-2021-23841 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=122a19ab48091c657f7cb1fb3af9fc07bd557bbf https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=8252ee4d90f3f2004d3d0aeeed003ad49c9a7807 https://security.netapp.com/advisory/ntap-20210513-0002/ https://support.apple.com/kb/HT212528 https://support.apple.com/kb/HT212529 https://support.apple.com/kb/HT212534 http://seclists.org/fulldisclosure/2021/May/67 http://seclists.org/fulldisclosure/2021/May/70 http://seclists.org/fulldisclosure/2021/May/68
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