diff options
Diffstat (limited to 'gnu/packages/patches/crypto++-fix-dos-in-asn.1-decoders.patch')
| -rw-r--r-- | gnu/packages/patches/crypto++-fix-dos-in-asn.1-decoders.patch | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/gnu/packages/patches/crypto++-fix-dos-in-asn.1-decoders.patch b/gnu/packages/patches/crypto++-fix-dos-in-asn.1-decoders.patch new file mode 100644 index 0000000000..88b2e7f25a --- /dev/null +++ b/gnu/packages/patches/crypto++-fix-dos-in-asn.1-decoders.patch @@ -0,0 +1,65 @@ +From 3d9181d7bdd8e491f745dbc9e34bd20b6f6da069 Mon Sep 17 00:00:00 2001 +From: Gergely Nagy <ngg@tresorit.com> +Date: Wed, 14 Dec 2016 13:19:01 +0100 +Subject: [PATCH] Fix possible DoS in ASN.1 decoders (CVE-2016-9939) + +--- + asn.cpp | 10 ++++++++++ + asn.h | 2 ++ + 2 files changed, 12 insertions(+) + +diff --git a/asn.cpp b/asn.cpp +index 297ff010..2e923ef7 100644 +--- a/asn.cpp ++++ b/asn.cpp +@@ -123,6 +123,8 @@ size_t BERDecodeOctetString(BufferedTransformation &bt, SecByteBlock &str) + size_t bc; + if (!BERLengthDecode(bt, bc)) + BERDecodeError(); ++ if (bc > bt.MaxRetrievable()) ++ BERDecodeError(); + + str.New(bc); + if (bc != bt.Get(str, bc)) +@@ -139,6 +141,8 @@ size_t BERDecodeOctetString(BufferedTransformation &bt, BufferedTransformation & + size_t bc; + if (!BERLengthDecode(bt, bc)) + BERDecodeError(); ++ if (bc > bt.MaxRetrievable()) ++ BERDecodeError(); + + bt.TransferTo(str, bc); + return bc; +@@ -161,6 +165,8 @@ size_t BERDecodeTextString(BufferedTransformation &bt, std::string &str, byte as + size_t bc; + if (!BERLengthDecode(bt, bc)) + BERDecodeError(); ++ if (bc > bt.MaxRetrievable()) ++ BERDecodeError(); + + SecByteBlock temp(bc); + if (bc != bt.Get(temp, bc)) +@@ -188,6 +194,10 @@ size_t BERDecodeBitString(BufferedTransformation &bt, SecByteBlock &str, unsigne + size_t bc; + if (!BERLengthDecode(bt, bc)) + BERDecodeError(); ++ if (bc == 0) ++ BERDecodeError(); ++ if (bc > bt.MaxRetrievable()) ++ BERDecodeError(); + + byte unused; + if (!bt.Get(unused)) +diff --git a/asn.h b/asn.h +index ed9de52c..33f0dd09 100644 +--- a/asn.h ++++ b/asn.h +@@ -498,6 +498,8 @@ void BERDecodeUnsigned(BufferedTransformation &in, T &w, byte asnTag = INTEGER, + bool definite = BERLengthDecode(in, bc); + if (!definite) + BERDecodeError(); ++ if (bc > in.MaxRetrievable()) ++ BERDecodeError(); + + SecByteBlock buf(bc); + |