Fix CVE-2017-14860. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-14860 https://nvd.nist.gov/vuln/detail/CVE-2017-14860 Copied from upstream: https://github.com/Exiv2/exiv2/commit/ff18fec24b119579df26fd2ebb8bb012cde102ce From ff18fec24b119579df26fd2ebb8bb012cde102ce Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Dan=20=C4=8Cerm=C3=A1k?= Date: Fri, 6 Oct 2017 23:09:08 +0200 Subject: [PATCH] Fix for CVE-2017-14860 A heap buffer overflow could occur in memcpy when icc.size_ is larger than data.size_ - pad, as then memcpy would read out of bounds of data. This commit adds a sanity check to iccLength (= icc.size_): if it is larger than data.size_ - pad (i.e. an overflow would be caused) an exception is thrown. This fixes #71. --- src/jp2image.cpp | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/src/jp2image.cpp b/src/jp2image.cpp index 747145cf..748d39b5 100644 --- a/src/jp2image.cpp +++ b/src/jp2image.cpp @@ -269,10 +269,15 @@ namespace Exiv2 std::cout << "Exiv2::Jp2Image::readMetadata: " << "Color data found" << std::endl; #endif - long pad = 3 ; // 3 padding bytes 2 0 0 + const long pad = 3 ; // 3 padding bytes 2 0 0 DataBuf data(subBox.length+8); io_->read(data.pData_,data.size_); - long iccLength = getULong(data.pData_+pad, bigEndian); + const long iccLength = getULong(data.pData_+pad, bigEndian); + // subtracting pad from data.size_ is safe: + // size_ is at least 8 and pad = 3 + if (iccLength > data.size_ - pad) { + throw Error(58); + } DataBuf icc(iccLength); ::memcpy(icc.pData_,data.pData_+pad,icc.size_); #ifdef DEBUG root/gnu/packages/graph.scm
AgeCommit message (Expand)Author
2018-09-06Add missing use-modules clause....Ricardo Wurmus
2018-09-05gnu: r-igraph: Update to 1.2.2....Ricardo Wurmus
2018-09-05gnu: r-diffusionmap: Update to 1.1-0.1....Ricardo Wurmus
2018-06-02gnu: r-rgraphviz: Update to 2.24.0....Ricardo Wurmus
2018-04-21gnu: r-igraph: Update to 1.2.1....Ricardo Wurmus
2018-03-27gnu: python-plotly: Update to 2.4.1....Tobias Geerinckx-Rice
2018-03-17gnu: Use HTTPS for r-project.org home pages....Tobias Geerinckx-Rice
2018-03-15gnu: Add python-plotly....Leo Famulari
2018-03-02gnu: Add r-rbiofabric....Ricardo Wurmus
2017-12-18gnu: Add r-diffusionmap....Ricardo Wurmus
2017-11-07gnu: r-rgraphviz: Update to 2.22.0....Ricardo Wurmus
2017-10-22gnu: Add r-rgraphviz....Ricardo Wurmus
2017-08-09gnu: r-igraph: Move to (gnu packages graph)....Ricardo Wurmus
2017-08-09gnu: Add python-igraph....Ricardo Wurmus
2017-08-09gnu: Add igraph....Ricardo Wurmus