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Limit OIDs to 128 components

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The longest OID known by oid-info.com is 34 components[1], so 128
should be plenty and will limit the potential for attacks.

[1] http://oid-info.com/get/1.3.6.1.4.1.1248.1.1.2.1.3.21.69.112.115.111.110.32.83.116.121.108.117.115.32.80.114.111.32.52.57.48.48

Signed-off-by: David Horstmann <david.horstmann@arm.com>
This commit is contained in:
David Horstmann
2023-04-26 11:50:14 +01:00
parent 861e5d2742
commit 9643575d92
3 changed files with 9 additions and 1 deletions
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5
include/mbedtls/oid.h
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@@ -63,6 +63,11 @@
#define MBEDTLS_OID_X509_EXT_FRESHEST_CRL (1 << 14)
#define MBEDTLS_OID_X509_EXT_NS_CERT_TYPE (1 << 16)
/*
* Maximum number of OID components allowed
*/
#define MBEDTLS_OID_MAX_COMPONENTS 128
/*
* Top level OID tuples
*/