diff options
author | Sunil Kumar <sukumar@mvista.com> | 2022-11-10 17:30:59 +0530 |
---|---|---|
committer | Steve Sakoman <steve@sakoman.com> | 2022-11-10 06:18:49 -1000 |
commit | a8e2f91edfe2df5204a482c4e53fbdd08f80e878 (patch) | |
tree | 44235a86c274f6fc8cd5dc34cc840d321d66dc1a | |
parent | c008c56e9b03f0ce3eccf4c01799ae8e987e5cd5 (diff) | |
download | openembedded-core-contrib-a8e2f91edfe2df5204a482c4e53fbdd08f80e878.tar.gz |
go: Security Fix for CVE-2022-2879
archive/tar: limit size of headers
Set a 1MiB limit on special file blocks (PAX headers, GNU long names,
GNU link names), to avoid reading arbitrarily large amounts of data
into memory.
Link: https://github.com/golang/go/commit/0a723816cd2
Signed-off-by: Sunil Kumar <sukumar@mvista.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
-rw-r--r-- | meta/recipes-devtools/go/go-1.14.inc | 1 | ||||
-rw-r--r-- | meta/recipes-devtools/go/go-1.14/CVE-2022-2879.patch | 111 |
2 files changed, 112 insertions, 0 deletions
diff --git a/meta/recipes-devtools/go/go-1.14.inc b/meta/recipes-devtools/go/go-1.14.inc index 3341beb159..e8ff1c4ec9 100644 --- a/meta/recipes-devtools/go/go-1.14.inc +++ b/meta/recipes-devtools/go/go-1.14.inc @@ -42,6 +42,7 @@ SRC_URI += "\ file://0003-CVE-2022-32190.patch \ file://0004-CVE-2022-32190.patch \ file://CVE-2022-2880.patch \ + file://CVE-2022-2879.patch \ " SRC_URI_append_libc-musl = " file://0009-ld-replace-glibc-dynamic-linker-with-musl.patch" diff --git a/meta/recipes-devtools/go/go-1.14/CVE-2022-2879.patch b/meta/recipes-devtools/go/go-1.14/CVE-2022-2879.patch new file mode 100644 index 0000000000..ea04a82d16 --- /dev/null +++ b/meta/recipes-devtools/go/go-1.14/CVE-2022-2879.patch @@ -0,0 +1,111 @@ +From 9d339f1d0f53c4116a7cb4acfa895f31a07212ee Mon Sep 17 00:00:00 2001 +From: Damien Neil <dneil@google.com> +Date: Fri, 2 Sep 2022 20:45:18 -0700 +Subject: [PATCH] archive/tar: limit size of headers + +Set a 1MiB limit on special file blocks (PAX headers, GNU long names, +GNU link names), to avoid reading arbitrarily large amounts of data +into memory. + +Thanks to Adam Korczynski (ADA Logics) and OSS-Fuzz for reporting +this issue. + +Fixes CVE-2022-2879 +Updates #54853 +Fixes #55926 + +Change-Id: I85136d6ff1e0af101a112190e027987ab4335680 +Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1565555 +Reviewed-by: Tatiana Bradley <tatianabradley@google.com> +Run-TryBot: Roland Shoemaker <bracewell@google.com> +Reviewed-by: Roland Shoemaker <bracewell@google.com> +(cherry picked from commit 6ee768cef6b82adf7a90dcf367a1699ef694f3b2) +Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1591053 +Reviewed-by: Julie Qiu <julieqiu@google.com> +Reviewed-by: Damien Neil <dneil@google.com> +Reviewed-on: https://go-review.googlesource.com/c/go/+/438498 +TryBot-Result: Gopher Robot <gobot@golang.org> +Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> +Reviewed-by: Carlos Amedee <carlos@golang.org> +Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org> +Run-TryBot: Carlos Amedee <carlos@golang.org> + +Upstream-Status: Backport [https://github.com/golang/go/commit/0a723816cd2] +CVE: CVE-2022-2879 +Signed-off-by: Sunil Kumar <sukumar@mvista.com> +--- + src/archive/tar/format.go | 4 ++++ + src/archive/tar/reader.go | 14 ++++++++++++-- + src/archive/tar/writer.go | 3 +++ + 3 files changed, 19 insertions(+), 2 deletions(-) + +diff --git a/src/archive/tar/format.go b/src/archive/tar/format.go +index cfe24a5..6642364 100644 +--- a/src/archive/tar/format.go ++++ b/src/archive/tar/format.go +@@ -143,6 +143,10 @@ const ( + blockSize = 512 // Size of each block in a tar stream + nameSize = 100 // Max length of the name field in USTAR format + prefixSize = 155 // Max length of the prefix field in USTAR format ++ ++ // Max length of a special file (PAX header, GNU long name or link). ++ // This matches the limit used by libarchive. ++ maxSpecialFileSize = 1 << 20 + ) + + // blockPadding computes the number of bytes needed to pad offset up to the +diff --git a/src/archive/tar/reader.go b/src/archive/tar/reader.go +index 4f9135b..e996595 100644 +--- a/src/archive/tar/reader.go ++++ b/src/archive/tar/reader.go +@@ -104,7 +104,7 @@ func (tr *Reader) next() (*Header, error) { + continue // This is a meta header affecting the next header + case TypeGNULongName, TypeGNULongLink: + format.mayOnlyBe(FormatGNU) +- realname, err := ioutil.ReadAll(tr) ++ realname, err := readSpecialFile(tr) + if err != nil { + return nil, err + } +@@ -294,7 +294,7 @@ func mergePAX(hdr *Header, paxHdrs map[string]string) (err error) { + // parsePAX parses PAX headers. + // If an extended header (type 'x') is invalid, ErrHeader is returned + func parsePAX(r io.Reader) (map[string]string, error) { +- buf, err := ioutil.ReadAll(r) ++ buf, err := readSpecialFile(r) + if err != nil { + return nil, err + } +@@ -827,6 +827,16 @@ func tryReadFull(r io.Reader, b []byte) (n int, err error) { + return n, err + } + ++// readSpecialFile is like ioutil.ReadAll except it returns ++// ErrFieldTooLong if more than maxSpecialFileSize is read. ++func readSpecialFile(r io.Reader) ([]byte, error) { ++ buf, err := ioutil.ReadAll(io.LimitReader(r, maxSpecialFileSize+1)) ++ if len(buf) > maxSpecialFileSize { ++ return nil, ErrFieldTooLong ++ } ++ return buf, err ++} ++ + // discard skips n bytes in r, reporting an error if unable to do so. + func discard(r io.Reader, n int64) error { + // If possible, Seek to the last byte before the end of the data section. +diff --git a/src/archive/tar/writer.go b/src/archive/tar/writer.go +index e80498d..893eac0 100644 +--- a/src/archive/tar/writer.go ++++ b/src/archive/tar/writer.go +@@ -199,6 +199,9 @@ func (tw *Writer) writePAXHeader(hdr *Header, paxHdrs map[string]string) error { + flag = TypeXHeader + } + data := buf.String() ++ if len(data) > maxSpecialFileSize { ++ return ErrFieldTooLong ++ } + if err := tw.writeRawFile(name, data, flag, FormatPAX); err != nil || isGlobal { + return err // Global headers return here + } +-- +2.7.4 |