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CVE-2015-4000

LOGJAM: TLS connections which support export grade DHE key-exchange are vulnerable to MITM attacks

The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHE_EXPORT choice, which allows man-in-the-middle attackers to conduct cipher-downgrade attacks by rewriting a ClientHello with DHE replaced by DHE_EXPORT and then rewriting a ServerHello with DHE_EXPORT replaced by DHE, aka the "Logjam" issue.

CVSS 3.1 · 3.7 Low EPSS 99.9% KEV · Not listed
Vendors
Apple Canonical Debian and 10 more
Products
Iphone Os Mac Os X Safari and 28 more
CVE-2015-1789

OpenSSL: out-of-bounds read in X509_cmp_time

The X509_cmp_time function in crypto/x509/x509_vfy.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted length field in ASN1_TIME data, as demonstrated by an attack against a server that supports client authentication with a custom verification callback.

CVSS 3.0 · 7.5 High EPSS 75.7% KEV · Not listed
Vendors
Openssl Oracle Redhat
Products
Openssl Sparc-opl Service Processor Enterprise Linux
CVE-2015-3238

pam: DoS/user enumeration due to blocking pipe in pam_unix module

The _unix_run_helper_binary function in the pam_unix module in Linux-PAM (aka pam) before 1.2.1, when unable to directly access passwords, allows local users to enumerate usernames or cause a denial of service (hang) via a large password.

CVSS 3.0 · 6.5 Medium EPSS 2.7% KEV · Not listed
Vendors
Linux-pam Oracle Redhat
Products
Linux-pam Sparc-opl Service Processor Enterprise Linux