CVE-2021-3711

In order to decrypt SM2 encrypted data an application is expected to call the API function EVP_PKEY_decrypt(). Typically an application will call this function twice. The first time, on entry, the "out" parameter can be NULL and, on exit, the "outlen" parameter is populated with the buffer size required to hold the decrypted plaintext. The application can then allocate a sufficiently sized buffer and call EVP_PKEY_decrypt() again, but this time passing a non-NULL value for the "out" parameter. A bug in the implementation of the SM2 decryption code means that the calculation of the buffer size required to hold the plaintext returned by the first call to EVP_PKEY_decrypt() can be smaller than the actual size required by the second call. This can lead to a buffer overflow when EVP_PKEY_decrypt() is called by the application a second time with a buffer that is too small. A malicious attacker who is able present SM2 content for decryption to an application could cause attacker chosen data to overflow the buffer by up to a maximum of 62 bytes altering the contents of other data held after the buffer, possibly changing application behaviour or causing the application to crash. The location of the buffer is application dependent but is typically heap allocated. Fixed in OpenSSL 1.1.1l (Affected 1.1.1-1.1.1k).

• openssl openssl (>= 1.1.1 < 1.1.1l) • debian debian linux 10.0 • debian debian linux 11.0 • netapp active iq unified manager • netapp clustered data ontap • netapp clustered data ontap antivirus connector • netapp e-series santricity os controller (>= 11.0 <= 11.50.2) • netapp hci management node • netapp manageability software development kit • netapp oncommand insight • netapp oncommand workflow automation • netapp santricity smi-s provider • netapp snapcenter • netapp solidfire • netapp storage encryption • oracle communications cloud native core security edge protection proxy 1.7.0 • oracle communications cloud native core unified data repository 1.15.0 • oracle communications session border controller 8.4 • oracle communications session border controller 9.0 • oracle communications unified session manager 8.2.5 • oracle communications unified session manager 8.4.5 • oracle enterprise communications broker 3.2.0 • oracle enterprise communications broker 3.3.0 • oracle enterprise session border controller 8.4 • oracle enterprise session border controller 9.0 • oracle essbase (< 11.1.2.4.47) • oracle essbase (>= 21.1 < 21.3) • oracle health sciences inform publisher 6.2.1.1 • oracle health sciences inform publisher 6.3.1.1 • oracle jd edwards enterpriseone tools (< 9.2.6.3) • oracle jd edwards world security a9.4 • oracle mysql connectors (<= 8.0.27) • oracle mysql enterprise monitor (<= 8.0.25) • oracle mysql server (>= 5.7.0 <= 5.7.35) • oracle mysql server (>= 8.0.0 <= 8.0.26) • oracle peoplesoft enterprise peopletools 8.57 • oracle peoplesoft enterprise peopletools 8.58 • oracle peoplesoft enterprise peopletools 8.59 • oracle zfs storage appliance kit 8.8 • tenable nessus network monitor (<= 5.13.1) • tenable tenable.sc (>= 5.16.0 <= 5.19.1)