diff options
author | V3n3RiX <venerix@redcorelinux.org> | 2020-11-25 22:39:15 +0000 |
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committer | V3n3RiX <venerix@redcorelinux.org> | 2020-11-25 22:39:15 +0000 |
commit | d934827bf44b7cfcf6711964418148fa60877668 (patch) | |
tree | 0625f358789b5e015e49db139cc1dbc9be00428f /app-crypt/mit-krb5/files/CVE-2020-28196.patch | |
parent | 2e34d110f164bf74d55fced27fe0000201b3eec5 (diff) |
gentoo resync : 25.11.2020
Diffstat (limited to 'app-crypt/mit-krb5/files/CVE-2020-28196.patch')
-rw-r--r-- | app-crypt/mit-krb5/files/CVE-2020-28196.patch | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/app-crypt/mit-krb5/files/CVE-2020-28196.patch b/app-crypt/mit-krb5/files/CVE-2020-28196.patch new file mode 100644 index 000000000000..486078437e89 --- /dev/null +++ b/app-crypt/mit-krb5/files/CVE-2020-28196.patch @@ -0,0 +1,71 @@ +diff --git a/src/lib/krb5/asn.1/asn1_encode.c b/src/lib/krb5/asn.1/asn1_encode.c +index a160cf4fe8..cd6b879f77 100644 +--- a/lib/krb5/asn.1/asn1_encode.c ++++ b/lib/krb5/asn.1/asn1_encode.c +@@ -356,7 +356,7 @@ make_tag(asn1buf *buf, const taginfo *t, size_t len) + static krb5_error_code + get_tag(const uint8_t *asn1, size_t len, taginfo *tag_out, + const uint8_t **contents_out, size_t *clen_out, +- const uint8_t **remainder_out, size_t *rlen_out) ++ const uint8_t **remainder_out, size_t *rlen_out, int recursion) + { + krb5_error_code ret; + uint8_t o; +@@ -394,9 +394,11 @@ get_tag(const uint8_t *asn1, size_t len, taginfo *tag_out, + /* Indefinite form (should not be present in DER, but we accept it). */ + if (tag_out->construction != CONSTRUCTED) + return ASN1_MISMATCH_INDEF; ++ if (recursion >= 32) ++ return ASN1_OVERFLOW; + p = asn1; + while (!(len >= 2 && p[0] == 0 && p[1] == 0)) { +- ret = get_tag(p, len, &t, &c, &clen, &p, &len); ++ ret = get_tag(p, len, &t, &c, &clen, &p, &len, recursion + 1); + if (ret) + return ret; + } +@@ -613,7 +615,7 @@ split_der(asn1buf *buf, uint8_t *const *der, size_t len, taginfo *tag_out) + const uint8_t *contents, *remainder; + size_t clen, rlen; + +- ret = get_tag(*der, len, tag_out, &contents, &clen, &remainder, &rlen); ++ ret = get_tag(*der, len, tag_out, &contents, &clen, &remainder, &rlen, 0); + if (ret) + return ret; + if (rlen != 0) +@@ -1199,7 +1201,7 @@ decode_atype(const taginfo *t, const uint8_t *asn1, size_t len, + const uint8_t *rem; + size_t rlen; + if (!tag->implicit) { +- ret = get_tag(asn1, len, &inner_tag, &asn1, &len, &rem, &rlen); ++ ret = get_tag(asn1, len, &inner_tag, &asn1, &len, &rem, &rlen, 0); + if (ret) + return ret; + /* Note: we don't check rlen (it should be 0). */ +@@ -1420,7 +1422,7 @@ decode_sequence(const uint8_t *asn1, size_t len, const struct seq_info *seq, + for (i = 0; i < seq->n_fields; i++) { + if (len == 0) + break; +- ret = get_tag(asn1, len, &t, &contents, &clen, &asn1, &len); ++ ret = get_tag(asn1, len, &t, &contents, &clen, &asn1, &len, 0); + if (ret) + goto error; + /* +@@ -1478,7 +1480,7 @@ decode_sequence_of(const uint8_t *asn1, size_t len, + *seq_out = NULL; + *count_out = 0; + while (len > 0) { +- ret = get_tag(asn1, len, &t, &contents, &clen, &asn1, &len); ++ ret = get_tag(asn1, len, &t, &contents, &clen, &asn1, &len, 0); + if (ret) + goto error; + if (!check_atype_tag(elemtype, &t)) { +@@ -1584,7 +1586,7 @@ k5_asn1_full_decode(const krb5_data *code, const struct atype_info *a, + + *retrep = NULL; + ret = get_tag((uint8_t *)code->data, code->length, &t, &contents, +- &clen, &remainder, &rlen); ++ &clen, &remainder, &rlen, 0); + if (ret) + return ret; + /* rlen should be 0, but we don't check it (and due to padding in |