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OpenSSL: Mehrere Schwachstellen
view advisory published 2021-02-16
Ein entfernter, anonymer oder lokaler Angreifer kann mehrere Schwachstellen in OpenSSL ausnutzen, um Sicherheitsvorkehrungen zu umgehen oder einen Denial of Service Zustand herzustellen.
01
describes (3)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2021-23841US | medium5.9OT elevated | Exploit | ||
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… | ||||
| CVE-2021-23840US | high7.5 | Exploit | ||
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… | ||||
| CVE-2021-23839US | low3.7OT elevated | — | ||
OpenSSL 1.0.2 supports SSLv2. If a client attempts to negotiate SSLv2 with a server that is configured to support both SSLv2 and more recent SSL and TLS versions then a check is ma… | ||||
02
references
External citations — patches, advisories, analysis.
- Red Hat Security Advisory RHSA-2021:1168 vom 2021-04-13external
- Red Hat Security Advisory RHSA-2021:3016 vom 2021-08-06external
- Red Hat Security Advisory RHSA-2021:3798 vom 2021-10-12external
- Red Hat Security Advisory RHSA-2021:4198 vom 2021-11-09external
- Red Hat Security Advisory RHSA-2021:4424 vom 2021-11-09external
- Red Hat Security Advisory RHSA-2021:4613 vom 2021-11-10external
- Red Hat Security Advisory RHSA-2021:4614 vom 2021-11-10external
- Red Hat Security Advisory RHSA-2021:4845 vom 2021-11-29external
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