CVE
CVE-2023-0215
| CVE ID |
CVE-2023-0215
|
|---|---|
| CVSS Score |
7.5
|
| Operating System | |
| Affected Versions | |
| Patched Versions |
openssl-1.0.2k-26_ol002.el7_9
|
| Patch Date |
|
| Last Updated Date | |
| Vector String |
Additional Information
OL CVE Issue Summary :
A use-after-free vulnerability was found in OpenSSL `BIO_new_NDEF()` function.
The function receives a BIO from the caller, prepends a new `BIO_f_asn1` filter BIO onto the front of it to form a BIO chain, and then returns the new head of the BIO chain to the caller.
Under certain conditions, for example, if a CMS recipient public key is invalid, the new filter BIO is freed, and the function returns NULL indicating a failure.
However, in this case, the BIO chain is not properly cleaned up, and the BIO passed by the caller still retains internal pointers to the previously freed filter BIO. If the caller then calls `BIO_pop()` on the BIO, a use-after-free will occur, possibly resulting in a crash.