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fix index out of bounds issue found by fuzz. #39

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merged 1 commit into from
Feb 26, 2024
Merged

fix index out of bounds issue found by fuzz. #39

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2 changes: 1 addition & 1 deletion spdmlib/src/crypto/x509v3.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -691,7 +691,7 @@ fn check_and_get_extn_id(extn_sequences: &[u8]) -> SpdmResult<(&[u8], usize)> {
} else {
// extnID is the first item in the extension sequence and the tag is Object identifier
let extn_id = &extn_sequences[1 + extn_bytes_consumed..];
if extn_id[0] != ASN1_TAG_NUMBER_OBJECT_IDENTIFIER {
if extn_id.is_empty() || extn_id[0] != ASN1_TAG_NUMBER_OBJECT_IDENTIFIER {
Err(SPDM_STATUS_VERIF_FAIL)
} else {
let (extn_id_length, extn_id_bytes_consumed) = check_length(&extn_id[1..])?;
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