Still cleaning up after the Heartbleed debacle, OpenSSL is issuing fixes for several vulnerabilities, one of them exploitable to run arbitrary code on the client or server.
Unlike Heartbleed, which had been introduced into the program not long before, affects all versions of OpenSSL, including those that were patched to fix Heartbleed.
The attack can only be performed between a vulnerable client *and* server. OpenSSL clients are vulnerable in all versions of OpenSSL. Servers are only known to be vulnerable in OpenSSL 1.0.1 and 1.0.2-beta1.
All client versions of OpenSSL are vulnerable. The bug was reported to OpenSSL on May 1 via JPCERT/CC.
OpenSSL provides this advice:
- OpenSSL 0.9.8 DTLS users should upgrade to 0.9.8za
- OpenSSL 1.0.0 DTLS users should upgrade to 1.0.0m
- OpenSSL 1.0.1 DTLS users should upgrade to 1.0.1h
Non-OpenSSL clients (IE, Firefox, Chrome on Desktop and iOS, Safari etc) aren’t affected. None the less, all OpenSSL users should be updating.
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