De multiples vulnérabilités ont été découvertes dans OpenSSL. Elles permettent à un attaquant de provoquer un déni de service.
Note
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OpenSSL 1.0.2 is out of support and no longer receiving public updates. Extended
support is available for premium support customers:
https://www.openssl.org/support/contracts.html
OpenSSL 1.1.0 is out of support and no longer receiving updates of any kind.
The impact of these issues on OpenSSL 1.1.0 has not been analysed.
Users of these versions should upgrade to OpenSSL 1.1.1.
~/Term$ openssl version
OpenSSL 1.1.1d 10 Sep 2019
~/Term$Null pointer deref in X509_issuer_and_serial_hash() (CVE-2021-23841)
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Severity: Moderate
...
OpenSSL versions 1.1.1i and below are affected by this issue. Users of these
versions should upgrade to OpenSSL 1.1.1j.
Integer overflow in CipherUpdate (CVE-2021-23840)
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Severity: Low
...
OpenSSL versions 1.1.1i and below are affected by this issue. Users of these
versions should upgrade to OpenSSL 1.1.1j.