diff options
| author | Richard Levitte <levitte@openssl.org> | 2023-05-12 10:00:13 +0200 |
|---|---|---|
| committer | Tomas Mraz <tomas@openssl.org> | 2023-06-06 10:48:50 +0200 |
| commit | d63b3e7959e79f98d60760a739f7876dc5adc838 (patch) | |
| tree | 987531abfe2b0ed71fc1f1bc6e4a40238e0aab03 /NEWS.md | |
| parent | 3ca28c9e81fae36b0b44dc39beecd2b5a7561975 (diff) | |
Restrict the size of OBJECT IDENTIFIERs that OBJ_obj2txt will translate
OBJ_obj2txt() would translate any size OBJECT IDENTIFIER to canonical
numeric text form. For gigantic sub-identifiers, this would take a very
long time, the time complexity being O(n^2) where n is the size of that
sub-identifier.
To mitigate this, a restriction on the size that OBJ_obj2txt() will
translate to canonical numeric text form is added, based on RFC 2578
(STD 58), which says this:
> 3.5. OBJECT IDENTIFIER values
>
> An OBJECT IDENTIFIER value is an ordered list of non-negative numbers.
> For the SMIv2, each number in the list is referred to as a sub-identifier,
> there are at most 128 sub-identifiers in a value, and each sub-identifier
> has a maximum value of 2^32-1 (4294967295 decimal).
Fixes otc/security#96
Fixes CVE-2023-2650
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Diffstat (limited to 'NEWS.md')
| -rw-r--r-- | NEWS.md | 4 |
1 files changed, 4 insertions, 0 deletions
@@ -38,6 +38,8 @@ OpenSSL 3.1 ### Major changes between OpenSSL 3.1.0 and OpenSSL 3.1.1 [under development] + * Mitigate for very slow `OBJ_obj2txt()` performance with gigantic OBJECT + IDENTIFIER sub-identities. ([CVE-2023-2650]) * Fixed buffer overread in AES-XTS decryption on ARM 64 bit platforms ([CVE-2023-1255]) * Fixed documentation of X509_VERIFY_PARAM_add0_policy() ([CVE-2023-0466]) @@ -1468,6 +1470,8 @@ OpenSSL 0.9.x * Support for various new platforms <!-- Links --> + +[CVE-2023-2650]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-2650 [CVE-2023-1255]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-1255 [CVE-2023-0466]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-0466 [CVE-2023-0465]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-0465 |