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Update CHANGES.md and NEWS.md for new release

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Reviewed-by: Tomas Mraz <tomas@openssl.org>
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Matt Caswell 2021-03-25 10:20:50 +00:00
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43
CHANGES.md
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@ -1661,6 +1661,49 @@ OpenSSL 1.1.1
### Changes between 1.1.1j and 1.1.1k [xx XXX xxxx]
* Fixed a problem with verifying a certificate chain when using the
X509_V_FLAG_X509_STRICT flag. This flag enables additional security checks of
the certificates present in a certificate chain. It is not set by default.
Starting from OpenSSL version 1.1.1h a check to disallow certificates in
the chain that have explicitly encoded elliptic curve parameters was added
as an additional strict check.
An error in the implementation of this check meant that the result of a
previous check to confirm that certificates in the chain are valid CA
certificates was overwritten. This effectively bypasses the check
that non-CA certificates must not be able to issue other certificates.
If a "purpose" has been configured then there is a subsequent opportunity
for checks that the certificate is a valid CA. All of the named "purpose"
values implemented in libcrypto perform this check. Therefore, where
a purpose is set the certificate chain will still be rejected even when the
strict flag has been used. A purpose is set by default in libssl client and
server certificate verification routines, but it can be overridden or
removed by an application.
In order to be affected, an application must explicitly set the
X509_V_FLAG_X509_STRICT verification flag and either not set a purpose
for the certificate verification or, in the case of TLS client or server
applications, override the default purpose.
([CVE-2021-3450])
*Tomáš Mráz*
* Fixed an issue where an OpenSSL TLS server may crash if sent a maliciously
crafted renegotiation ClientHello message from a client. If a TLSv1.2
renegotiation ClientHello omits the signature_algorithms extension (where it
was present in the initial ClientHello), but includes a
signature_algorithms_cert extension then a NULL pointer dereference will
result, leading to a crash and a denial of service attack.
A server is only vulnerable if it has TLSv1.2 and renegotiation enabled
(which is the default configuration). OpenSSL TLS clients are not impacted by
this issue.
([CVE-2021-3449])
*Peter Kästle and Samuel Sapalski*
### Changes between 1.1.1i and 1.1.1j [16 Feb 2021]
* Fixed the X509_issuer_and_serial_hash() function. It attempts to

5
NEWS.md
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@ -87,6 +87,11 @@ OpenSSL 1.1.1
### Major changes between OpenSSL 1.1.1j and OpenSSL 1.1.1k [under development]
* Fixed a problem with verifying a certificate chain when using the
X509_V_FLAG_X509_STRICT flag ([CVE-2021-3450])
* Fixed an issue where an OpenSSL TLS server may crash if sent a maliciously
crafted renegotiation ClientHello message from a client ([CVE-2021-3449])
### Major changes between OpenSSL 1.1.1i and OpenSSL 1.1.1j [16 Feb 2021]
* Fixed a NULL pointer deref in the X509_issuer_and_serial_hash()