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).
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
openssl openssl |
||
debian debian linux 10.0 |
||
debian debian linux 11.0 |
||
netapp santricity smi-s provider - |
||
netapp snapcenter - |
||
netapp oncommand workflow automation - |
||
netapp oncommand insight - |
||
netapp clustered data ontap - |
||
netapp clustered data ontap antivirus connector - |
||
netapp solidfire - |
||
netapp hci management node - |
||
netapp active iq unified manager - |
||
netapp manageability software development kit - |
||
netapp storage encryption - |
||
netapp e-series santricity os controller |
||
oracle peoplesoft enterprise peopletools 8.57 |
||
oracle jd edwards world security a9.4 |
||
oracle peoplesoft enterprise peopletools 8.58 |
||
oracle enterprise session border controller 8.4 |
||
oracle enterprise communications broker 3.2.0 |
||
oracle zfs storage appliance kit 8.8 |
||
oracle peoplesoft enterprise peopletools 8.59 |
||
oracle mysql server |
||
oracle communications session border controller 8.4 |
||
oracle enterprise session border controller 9.0 |
||
oracle communications session border controller 9.0 |
||
oracle communications cloud native core security edge protection proxy 1.7.0 |
||
oracle mysql enterprise monitor |
||
oracle enterprise communications broker 3.3.0 |
||
oracle essbase |
||
oracle mysql connectors |
||
oracle communications unified session manager 8.2.5 |
||
oracle communications cloud native core unified data repository 1.15.0 |
||
oracle health sciences inform publisher 6.3.1.1 |
||
oracle health sciences inform publisher 6.2.1.1 |
||
oracle jd edwards enterpriseone tools |
||
oracle communications unified session manager 8.4.5 |
||
tenable tenable.sc |
||
tenable nessus network monitor |
Get our weekly newsletter Light load has infosec bods wondering what awaits next month
Patch Tuesday As the US season of giving thanks and turkey carnage approaches, let us reflect upon Microsoft's November Patch Tuesday, which has bestowed 55 CVEs and the promise of continued employment for the IT admins who have to clean up the recurring mess of software. Only six of the vulnerabilities are considered "Critical," the rest are just "Important." Affected applications include: 3D Viewer, Azure (including RTOS and Sphere), Dynamics, Edge, Exchange Server, Office, Power BI, Role: Win...
Vulmon