diff options
Diffstat (limited to 'meta/recipes-extended/unzip/unzip/19-cve-2016-9844-zipinfo-buffer-overflow.patch')
| -rw-r--r-- | meta/recipes-extended/unzip/unzip/19-cve-2016-9844-zipinfo-buffer-overflow.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/meta/recipes-extended/unzip/unzip/19-cve-2016-9844-zipinfo-buffer-overflow.patch b/meta/recipes-extended/unzip/unzip/19-cve-2016-9844-zipinfo-buffer-overflow.patch new file mode 100644 index 0000000000..fd0c024d7e --- /dev/null +++ b/meta/recipes-extended/unzip/unzip/19-cve-2016-9844-zipinfo-buffer-overflow.patch @@ -0,0 +1,32 @@ +From: "Steven M. Schweda" <sms@antinode.info> +Subject: Fix CVE-2016-9844, buffer overflow in zipinfo +Bug-Debian: https://bugs.debian.org/847486 +Bug-Ubuntu: https://launchpad.net/bugs/1643750 +X-Debian-version: 6.0-21 + +Upstream-Status: Backport + +Signed-off-by: Zhixiong Chi <zhixiong.chi@windriver.com> + +--- a/zipinfo.c ++++ b/zipinfo.c +@@ -1921,7 +1921,18 @@ + ush dnum=(ush)((G.crec.general_purpose_bit_flag>>1) & 3); + methbuf[3] = dtype[dnum]; + } else if (methnum >= NUM_METHODS) { /* unknown */ +- sprintf(&methbuf[1], "%03u", G.crec.compression_method); ++ /* 2016-12-05 SMS. ++ * https://launchpad.net/bugs/1643750 ++ * Unexpectedly large compression methods overflow ++ * &methbuf[]. Use the old, three-digit decimal format ++ * for values which fit. Otherwise, sacrifice the "u", ++ * and use four-digit hexadecimal. ++ */ ++ if (G.crec.compression_method <= 999) { ++ sprintf( &methbuf[ 1], "%03u", G.crec.compression_method); ++ } else { ++ sprintf( &methbuf[ 0], "%04X", G.crec.compression_method); ++ } + } + + for (k = 0; k < 15; ++k) |