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author | A. Wilcox <awilcox@wilcox-tech.com> | 2020-06-15 21:08:54 +0000 |
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committer | A. Wilcox <awilcox@wilcox-tech.com> | 2020-06-15 21:08:54 +0000 |
commit | fdeddc8e9da35c99bae08190a8476dc37ac8e9b8 (patch) | |
tree | a28b8099d156ea27a5efc7d4603bbc2289363471 /user/libexif/CVE-2019-9278.patch | |
parent | 230772b3aed14d14b9438ea9b2283fa28c7ebce5 (diff) | |
parent | 29e941e719283d2570dc67038722d6ea6c19874e (diff) | |
download | packages-fdeddc8e9da35c99bae08190a8476dc37ac8e9b8.tar.gz packages-fdeddc8e9da35c99bae08190a8476dc37ac8e9b8.tar.bz2 packages-fdeddc8e9da35c99bae08190a8476dc37ac8e9b8.tar.xz packages-fdeddc8e9da35c99bae08190a8476dc37ac8e9b8.zip |
Merge branch 'sec/2020.06.02' into 'master'
Security updates for 2020.06.02
See merge request adelie/packages!464
Diffstat (limited to 'user/libexif/CVE-2019-9278.patch')
-rw-r--r-- | user/libexif/CVE-2019-9278.patch | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/user/libexif/CVE-2019-9278.patch b/user/libexif/CVE-2019-9278.patch deleted file mode 100644 index bd15e8d13..000000000 --- a/user/libexif/CVE-2019-9278.patch +++ /dev/null @@ -1,85 +0,0 @@ -From 75aa73267fdb1e0ebfbc00369e7312bac43d0566 Mon Sep 17 00:00:00 2001 -From: Marcus Meissner <meissner@suse.de> -Date: Sat, 18 Jan 2020 09:29:42 +0100 -Subject: [PATCH] fix CVE-2019-9278 - -avoid the use of unsafe integer overflow checking constructs (unsigned integer operations cannot overflow, so "u1 + u2 > u1" can be optimized away) - -check for the actual sizes, which should also handle the overflows -document other places google patched, but do not seem relevant due to other restrictions - -fixes https://github.com/libexif/libexif/issues/26 ---- - libexif/exif-data.c | 28 ++++++++++++++++++---------- - 1 file changed, 18 insertions(+), 10 deletions(-) - -diff --git a/libexif/exif-data.c b/libexif/exif-data.c -index a6f9c94..6332cd1 100644 ---- a/libexif/exif-data.c -+++ b/libexif/exif-data.c -@@ -192,9 +192,15 @@ exif_data_load_data_entry (ExifData *data, ExifEntry *entry, - doff = offset + 8; - - /* Sanity checks */ -- if ((doff + s < doff) || (doff + s < s) || (doff + s > size)) { -+ if (doff >= size) { - exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData", -- "Tag data past end of buffer (%u > %u)", doff+s, size); -+ "Tag starts past end of buffer (%u > %u)", doff, size); -+ return 0; -+ } -+ -+ if (s > size - doff) { -+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData", -+ "Tag data goes past end of buffer (%u > %u)", doff+s, size); - return 0; - } - -@@ -315,13 +321,14 @@ exif_data_load_data_thumbnail (ExifData *data, const unsigned char *d, - unsigned int ds, ExifLong o, ExifLong s) - { - /* Sanity checks */ -- if ((o + s < o) || (o + s < s) || (o + s > ds) || (o > ds)) { -- exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData", -- "Bogus thumbnail offset (%u) or size (%u).", -- o, s); -+ if (o >= ds) { -+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData", "Bogus thumbnail offset (%u).", o); -+ return; -+ } -+ if (s > ds - o) { -+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData", "Bogus thumbnail size (%u), max would be %u.", s, ds-o); - return; - } -- - if (data->data) - exif_mem_free (data->priv->mem, data->data); - if (!(data->data = exif_data_alloc (data, s))) { -@@ -947,7 +954,7 @@ exif_data_load_data (ExifData *data, const unsigned char *d_orig, - exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData", - "IFD 0 at %i.", (int) offset); - -- /* Sanity check the offset, being careful about overflow */ -+ /* ds is restricted to 16 bit above, so offset is restricted too, and offset+8 should not overflow. */ - if (offset > ds || offset + 6 + 2 > ds) - return; - -@@ -956,6 +963,7 @@ exif_data_load_data (ExifData *data, const unsigned char *d_orig, - - /* IFD 1 offset */ - n = exif_get_short (d + 6 + offset, data->priv->order); -+ /* offset < 2<<16, n is 16 bit at most, so this op will not overflow */ - if (offset + 6 + 2 + 12 * n + 4 > ds) - return; - -@@ -964,8 +972,8 @@ exif_data_load_data (ExifData *data, const unsigned char *d_orig, - exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData", - "IFD 1 at %i.", (int) offset); - -- /* Sanity check. */ -- if (offset > ds || offset + 6 > ds) { -+ /* Sanity check. ds is ensured to be above 6 above, offset is 16bit */ -+ if (offset > ds - 6) { - exif_log (data->priv->log, EXIF_LOG_CODE_CORRUPT_DATA, - "ExifData", "Bogus offset of IFD1."); - } else { |