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由 Richard Levitte 提交于
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: NMatt Caswell <matt@openssl.org> Reviewed-by: NTomas Mraz <tomas@openssl.org> Signed-off-by: Ncode4lala <fengziteng2@huawei.com>
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