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OpenSSL CBC timing attack information leak (CVE-2003-0078)

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OpenSSL CBC timing attack information leak (CVE-2003-0078)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
03/03/2003
Created
07/25/2018
Added
11/01/2004
Modified
06/09/2016

Description

ssl3_get_record in s3_pkt.c for OpenSSL before 0.9.7a and 0.9.6 before 0.9.6i does not perform a MAC computation if an incorrect block cipher padding is used, which causes an information leak (timing discrepancy) that may make it easier to launch cryptographic attacks that rely on distinguishing between padding and MAC verification errors, possibly leading to extraction of the original plaintext, aka the "Vaudenay timing attack."

Solution(s)

  • http-openssl-0_9_6-upgrade-0_9_6_i
  • http-openssl-0_9_7-upgrade-0_9_7_a

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