diff options
author | Richard Levitte <levitte@openssl.org> | 2023-05-12 10:00:13 +0200 |
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committer | Tomas Mraz <tomas@openssl.org> | 2023-05-29 15:37:30 +0200 |
commit | 9e209944b35cf82368071f160a744b6178f9b098 (patch) | |
tree | bbb7631fb1ce91194476fa05d0bb66e431466d78 /engines | |
parent | 3cc6933555a0c66328ec659b5bb86c57b6402e1e (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 'engines')
0 files changed, 0 insertions, 0 deletions