Fix possible DoS translating ASN.1 object identifiers
Resolves: CVE-2023-2650
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103d3109dc
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30
0122-CVE-2023-2650.patch
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30
0122-CVE-2023-2650.patch
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@ -0,0 +1,30 @@
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diff --git a/crypto/objects/obj_dat.c b/crypto/objects/obj_dat.c
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index 01cde00e98..c0e55197a0 100644
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--- a/crypto/objects/obj_dat.c
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+++ b/crypto/objects/obj_dat.c
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@@ -443,6 +443,25 @@ int OBJ_obj2txt(char *buf, int buf_len, const ASN1_OBJECT *a, int no_name)
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first = 1;
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bl = NULL;
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+ /*
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+ * RFC 2578 (STD 58) says this about OBJECT IDENTIFIERs:
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+ *
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+ * > 3.5. OBJECT IDENTIFIER values
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+ * >
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+ * > An OBJECT IDENTIFIER value is an ordered list of non-negative
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+ * > numbers. For the SMIv2, each number in the list is referred to as a
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+ * > sub-identifier, there are at most 128 sub-identifiers in a value,
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+ * > and each sub-identifier has a maximum value of 2^32-1 (4294967295
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+ * > decimal).
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+ *
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+ * So a legitimate OID according to this RFC is at most (32 * 128 / 7),
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+ * i.e. 586 bytes long.
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+ *
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+ * Ref: https://datatracker.ietf.org/doc/html/rfc2578#section-3.5
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+ */
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+ if (len > 586)
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+ goto err;
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+
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while (len > 0) {
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l = 0;
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use_bn = 0;
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@ -29,7 +29,7 @@ print(string.sub(hash, 0, 16))
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Summary: Utilities from the general purpose cryptography library with TLS implementation
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Name: openssl
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Version: 3.0.7
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Release: 19%{?dist}
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Release: 20%{?dist}
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Epoch: 1
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# We have to remove certain patented algorithms from the openssl source
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# tarball with the hobble-openssl script which is included below.
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@ -194,6 +194,7 @@ Patch118: 0118-CVE-2023-1255.patch
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Patch120: 0120-RSA-PKCS15-implicit-rejection.patch
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# https://bugzilla.redhat.com/show_bug.cgi?id=2160797
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Patch121: 0121-FIPS-cms-defaults.patch
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Patch122: 0122-CVE-2023-2650.patch
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License: ASL 2.0
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URL: http://www.openssl.org/
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@ -517,6 +518,10 @@ install -m644 %{SOURCE9} \
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%ldconfig_scriptlets libs
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%changelog
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* Tue May 30 2023 Dmitry Belyavskiy <dbelyavs@redhat.com> - 1:3.0.7-20
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- Fix possible DoS translating ASN.1 object identifiers
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Resolves: CVE-2023-2650
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* Mon May 22 2023 Clemens Lang <cllang@redhat.com> - 1:3.0.7-19
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- Re-enable DHX keys in FIPS mode, disable FIPS 186-4 parameter validation and generation in FIPS mode
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Resolves: rhbz#2169757
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