openssl-1.0.1e-58.0.2.AXS4

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and
Transport Layer Security (TLS) protocols, as well as a full-strength
general-purpose cryptography library.

Security Fix(es):

* openssl: integer overflow in CipherUpdate (CVE-2021-23840)
* openssl: NULL pointer dereference in X509_issuer_and_serial_hash()
(CVE-2021-23841)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE page(s)
listed in the References section.

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 permissable 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. 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. 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).

Additional info:
https://access.redhat.com/errata/RHSA-2021:3798
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23840
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23841