diff options
Diffstat (limited to 'meta/recipes-support/libexif')
7 files changed, 129 insertions, 238 deletions
diff --git a/meta/recipes-support/libexif/files/CVE-2020-0198.patch b/meta/recipes-support/libexif/files/CVE-2020-0198.patch new file mode 100644 index 0000000000..2a48844cb2 --- /dev/null +++ b/meta/recipes-support/libexif/files/CVE-2020-0198.patch @@ -0,0 +1,66 @@ +From ca71eda33fe8421f98fbe20eb4392473357c1c43 Mon Sep 17 00:00:00 2001 +From: Changqing Li <changqing.li@windriver.com> +Date: Wed, 30 Dec 2020 10:22:47 +0800 +Subject: [PATCH] fixed another unsigned integer overflow + +first fixed by google in android fork, +https://android.googlesource.com/platform/external/libexif/+/1e187b62682ffab5003c702657d6d725b4278f16%5E%21/#F0 + +(use a more generic overflow check method, also check second overflow instance.) + +https://security-tracker.debian.org/tracker/CVE-2020-0198 + +Upstream-Status: Backport[https://github.com/libexif/libexif/commit/ce03ad7ef4e8aeefce79192bf5b6f69fae396f0c] +CVE: CVE-2020-0198 + +Signed-off-by: Changqing Li <changqing.li@windriver.com> +--- + libexif/exif-data.c | 10 ++++++---- + 1 file changed, 6 insertions(+), 4 deletions(-) + +diff --git a/libexif/exif-data.c b/libexif/exif-data.c +index 8b280d3..34d58fc 100644 +--- a/libexif/exif-data.c ++++ b/libexif/exif-data.c +@@ -47,6 +47,8 @@ + #undef JPEG_MARKER_APP1 + #define JPEG_MARKER_APP1 0xe1 + ++#define CHECKOVERFLOW(offset,datasize,structsize) (( offset >= datasize) || (structsize > datasize) || (offset > datasize - structsize )) ++ + static const unsigned char ExifHeader[] = {0x45, 0x78, 0x69, 0x66, 0x00, 0x00}; + + struct _ExifDataPrivate +@@ -327,7 +329,7 @@ exif_data_load_data_thumbnail (ExifData *data, const unsigned char *d, + exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData", "Bogus thumbnail offset (%u).", o); + return; + } +- if (s > ds - o) { ++ if (CHECKOVERFLOW(o,ds,s)) { + exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData", "Bogus thumbnail size (%u), max would be %u.", s, ds-o); + return; + } +@@ -420,9 +422,9 @@ exif_data_load_data_content (ExifData *data, ExifIfd ifd, + } + + /* Read the number of entries */ +- if ((offset + 2 < offset) || (offset + 2 < 2) || (offset + 2 > ds)) { ++ if (CHECKOVERFLOW(offset, ds, 2)) { + exif_log (data->priv->log, EXIF_LOG_CODE_CORRUPT_DATA, "ExifData", +- "Tag data past end of buffer (%u > %u)", offset+2, ds); ++ "Tag data past end of buffer (%u+2 > %u)", offset, ds); + return; + } + n = exif_get_short (d + offset, data->priv->order); +@@ -431,7 +433,7 @@ exif_data_load_data_content (ExifData *data, ExifIfd ifd, + offset += 2; + + /* Check if we have enough data. */ +- if (offset + 12 * n > ds) { ++ if (CHECKOVERFLOW(offset, ds, 12*n)) { + n = (ds - offset) / 12; + exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData", + "Short data; only loading %hu entries...", n); +-- +2.17.1 + diff --git a/meta/recipes-support/libexif/files/CVE-2020-0452.patch b/meta/recipes-support/libexif/files/CVE-2020-0452.patch new file mode 100644 index 0000000000..a117b8b369 --- /dev/null +++ b/meta/recipes-support/libexif/files/CVE-2020-0452.patch @@ -0,0 +1,39 @@ +From 302acd49eba0a125b0f20692df6abc6f7f7ca53e Mon Sep 17 00:00:00 2001 +From: Changqing Li <changqing.li@windriver.com> +Date: Wed, 30 Dec 2020 10:18:51 +0800 +Subject: [PATCH] fixed a incorrect overflow check that could be optimized + away. + +inspired by: +https://android.googlesource.com/platform/external/libexif/+/8e7345f3bc0bad06ac369d6cbc1124c8ceaf7d4b + +https://source.android.com/security/bulletin/2020-11-01 + +CVE-2020-0452 + +Upsteam-Status: Backport[https://github.com/libexif/libexif/commit/9266d14b5ca4e29b970fa03272318e5f99386e06] +CVE: CVE-2020-0452 + +Signed-off-by: Changqing Li <changqing.li@windriver.com> +--- + libexif/exif-entry.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/libexif/exif-entry.c b/libexif/exif-entry.c +index 5de215f..3a6ce84 100644 +--- a/libexif/exif-entry.c ++++ b/libexif/exif-entry.c +@@ -1371,8 +1371,8 @@ exif_entry_get_value (ExifEntry *e, char *val, unsigned int maxlen) + { + unsigned char *utf16; + +- /* Sanity check the size to prevent overflow */ +- if (e->size+sizeof(uint16_t)+1 < e->size) break; ++ /* Sanity check the size to prevent overflow. Note EXIF files are 64kb at most. */ ++ if (e->size >= 65536 - sizeof(uint16_t)*2) break; + + /* The tag may not be U+0000-terminated , so make a local + U+0000-terminated copy before converting it */ +-- +2.17.1 + diff --git a/meta/recipes-support/libexif/libexif/CVE-2016-6328.patch b/meta/recipes-support/libexif/libexif/CVE-2016-6328.patch deleted file mode 100644 index a6f307439b..0000000000 --- a/meta/recipes-support/libexif/libexif/CVE-2016-6328.patch +++ /dev/null @@ -1,64 +0,0 @@ -CVE: CVE-2016-6328 -Upstream-Status: Backport -Signed-off-by: Ross Burton <ross.burton@intel.com> - -From 41bd04234b104312f54d25822f68738ba8d7133d Mon Sep 17 00:00:00 2001 -From: Marcus Meissner <marcus@jet.franken.de> -Date: Tue, 25 Jul 2017 23:44:44 +0200 -Subject: [PATCH] fixes some (not all) buffer overreads during decoding pentax - makernote entries. - -This should fix: -https://sourceforge.net/p/libexif/bugs/125/ CVE-2016-6328 ---- - libexif/pentax/mnote-pentax-entry.c | 16 +++++++++++++--- - 1 file changed, 13 insertions(+), 3 deletions(-) - -diff --git a/libexif/pentax/mnote-pentax-entry.c b/libexif/pentax/mnote-pentax-entry.c -index d03d159..ea0429a 100644 ---- a/libexif/pentax/mnote-pentax-entry.c -+++ b/libexif/pentax/mnote-pentax-entry.c -@@ -425,24 +425,34 @@ mnote_pentax_entry_get_value (MnotePentaxEntry *entry, - case EXIF_FORMAT_SHORT: - { - const unsigned char *data = entry->data; -- size_t k, len = strlen(val); -+ size_t k, len = strlen(val), sizeleft; -+ -+ sizeleft = entry->size; - for(k=0; k<entry->components; k++) { -+ if (sizeleft < 2) -+ break; - vs = exif_get_short (data, entry->order); - snprintf (val+len, maxlen-len, "%i ", vs); - len = strlen(val); - data += 2; -+ sizeleft -= 2; - } - } - break; - case EXIF_FORMAT_LONG: - { - const unsigned char *data = entry->data; -- size_t k, len = strlen(val); -+ size_t k, len = strlen(val), sizeleft; -+ -+ sizeleft = entry->size; - for(k=0; k<entry->components; k++) { -+ if (sizeleft < 4) -+ break; - vl = exif_get_long (data, entry->order); - snprintf (val+len, maxlen-len, "%li", (long int) vl); - len = strlen(val); - data += 4; -+ sizeleft -= 4; - } - } - break; -@@ -455,5 +465,5 @@ mnote_pentax_entry_get_value (MnotePentaxEntry *entry, - break; - } - -- return (val); -+ return val; - } diff --git a/meta/recipes-support/libexif/libexif/CVE-2017-7544.patch b/meta/recipes-support/libexif/libexif/CVE-2017-7544.patch deleted file mode 100644 index e49481ff84..0000000000 --- a/meta/recipes-support/libexif/libexif/CVE-2017-7544.patch +++ /dev/null @@ -1,40 +0,0 @@ -From 8a92f964a66d476ca8907234359e92a70fc1325b Mon Sep 17 00:00:00 2001 -From: Changqing Li <changqing.li@windriver.com> -Date: Tue, 28 Aug 2018 15:12:10 +0800 -Subject: [PATCH] On saving makernotes, make sure the makernote container tags - has a type with 1 byte components. - -Fixes (at least): - https://sourceforge.net/p/libexif/bugs/130 - https://sourceforge.net/p/libexif/bugs/129 - -Upstream-Status: Backport[https://github.com/libexif/libexif/commit/ -c39acd1692023b26290778a02a9232c873f9d71a#diff-830e348923810f00726700b083ec00cd] - -CVE: CVE-2017-7544 - -Signed-off-by: Changqing Li <changqing.li@windriver.com> ---- - libexif/exif-data.c | 6 ++++++ - 1 file changed, 6 insertions(+) - -diff --git a/libexif/exif-data.c b/libexif/exif-data.c -index 67df4db..6bf89eb 100644 ---- a/libexif/exif-data.c -+++ b/libexif/exif-data.c -@@ -255,6 +255,12 @@ exif_data_save_data_entry (ExifData *data, ExifEntry *e, - exif_mnote_data_set_offset (data->priv->md, *ds - 6); - exif_mnote_data_save (data->priv->md, &e->data, &e->size); - e->components = e->size; -+ if (exif_format_get_size (e->format) != 1) { -+ /* e->format is taken from input code, -+ * but we need to make sure it is a 1 byte -+ * entity due to the multiplication below. */ -+ e->format = EXIF_FORMAT_UNDEFINED; -+ } - } - } - --- -2.7.4 - diff --git a/meta/recipes-support/libexif/libexif/CVE-2018-20030.patch b/meta/recipes-support/libexif/libexif/CVE-2018-20030.patch deleted file mode 100644 index 76233e6dc9..0000000000 --- a/meta/recipes-support/libexif/libexif/CVE-2018-20030.patch +++ /dev/null @@ -1,115 +0,0 @@ -CVE: CVE-2018-20030 -Upstream-Status: Backport -Signed-off-by: Ross Burton <ross.burton@intel.com> - -From 6aa11df549114ebda520dde4cdaea2f9357b2c89 Mon Sep 17 00:00:00 2001 -From: Dan Fandrich <dan@coneharvesters.com> -Date: Fri, 12 Oct 2018 16:01:45 +0200 -Subject: [PATCH] Improve deep recursion detection in - exif_data_load_data_content. - -The existing detection was still vulnerable to pathological cases -causing DoS by wasting CPU. The new algorithm takes the number of tags -into account to make it harder to abuse by cases using shallow recursion -but with a very large number of tags. This improves on commit 5d28011c -which wasn't sufficient to counter this kind of case. - -The limitation in the previous fix was discovered by Laurent Delosieres, -Secunia Research at Flexera (Secunia Advisory SA84652) and is assigned -the identifier CVE-2018-20030. - -diff --git a/libexif/exif-data.c b/libexif/exif-data.c -index 67df4db..8d9897e 100644 ---- a/libexif/exif-data.c -+++ b/libexif/exif-data.c -@@ -35,6 +35,7 @@ - #include <libexif/olympus/exif-mnote-data-olympus.h> - #include <libexif/pentax/exif-mnote-data-pentax.h> - -+#include <math.h> - #include <stdlib.h> - #include <stdio.h> - #include <string.h> -@@ -344,6 +345,20 @@ if (data->ifd[(i)]->count) { \ - break; \ - } - -+/*! Calculate the recursion cost added by one level of IFD loading. -+ * -+ * The work performed is related to the cost in the exponential relation -+ * work=1.1**cost -+ */ -+static unsigned int -+level_cost(unsigned int n) -+{ -+ static const double log_1_1 = 0.09531017980432493; -+ -+ /* Adding 0.1 protects against the case where n==1 */ -+ return ceil(log(n + 0.1)/log_1_1); -+} -+ - /*! Load data for an IFD. - * - * \param[in,out] data #ExifData -@@ -351,13 +366,13 @@ if (data->ifd[(i)]->count) { \ - * \param[in] d pointer to buffer containing raw IFD data - * \param[in] ds size of raw data in buffer at \c d - * \param[in] offset offset into buffer at \c d at which IFD starts -- * \param[in] recursion_depth number of times this function has been -- * recursively called without returning -+ * \param[in] recursion_cost factor indicating how expensive this recursive -+ * call could be - */ - static void - exif_data_load_data_content (ExifData *data, ExifIfd ifd, - const unsigned char *d, -- unsigned int ds, unsigned int offset, unsigned int recursion_depth) -+ unsigned int ds, unsigned int offset, unsigned int recursion_cost) - { - ExifLong o, thumbnail_offset = 0, thumbnail_length = 0; - ExifShort n; -@@ -372,9 +387,20 @@ exif_data_load_data_content (ExifData *data, ExifIfd ifd, - if ((((int)ifd) < 0) || ( ((int)ifd) >= EXIF_IFD_COUNT)) - return; - -- if (recursion_depth > 30) { -+ if (recursion_cost > 170) { -+ /* -+ * recursion_cost is a logarithmic-scale indicator of how expensive this -+ * recursive call might end up being. It is an indicator of the depth of -+ * recursion as well as the potential for worst-case future recursive -+ * calls. Since it's difficult to tell ahead of time how often recursion -+ * will occur, this assumes the worst by assuming every tag could end up -+ * causing recursion. -+ * The value of 170 was chosen to limit typical EXIF structures to a -+ * recursive depth of about 6, but pathological ones (those with very -+ * many tags) to only 2. -+ */ - exif_log (data->priv->log, EXIF_LOG_CODE_CORRUPT_DATA, "ExifData", -- "Deep recursion detected!"); -+ "Deep/expensive recursion detected!"); - return; - } - -@@ -416,15 +442,18 @@ exif_data_load_data_content (ExifData *data, ExifIfd ifd, - switch (tag) { - case EXIF_TAG_EXIF_IFD_POINTER: - CHECK_REC (EXIF_IFD_EXIF); -- exif_data_load_data_content (data, EXIF_IFD_EXIF, d, ds, o, recursion_depth + 1); -+ exif_data_load_data_content (data, EXIF_IFD_EXIF, d, ds, o, -+ recursion_cost + level_cost(n)); - break; - case EXIF_TAG_GPS_INFO_IFD_POINTER: - CHECK_REC (EXIF_IFD_GPS); -- exif_data_load_data_content (data, EXIF_IFD_GPS, d, ds, o, recursion_depth + 1); -+ exif_data_load_data_content (data, EXIF_IFD_GPS, d, ds, o, -+ recursion_cost + level_cost(n)); - break; - case EXIF_TAG_INTEROPERABILITY_IFD_POINTER: - CHECK_REC (EXIF_IFD_INTEROPERABILITY); -- exif_data_load_data_content (data, EXIF_IFD_INTEROPERABILITY, d, ds, o, recursion_depth + 1); -+ exif_data_load_data_content (data, EXIF_IFD_INTEROPERABILITY, d, ds, o, -+ recursion_cost + level_cost(n)); - break; - case EXIF_TAG_JPEG_INTERCHANGE_FORMAT: - thumbnail_offset = o; diff --git a/meta/recipes-support/libexif/libexif_0.6.21.bb b/meta/recipes-support/libexif/libexif_0.6.21.bb deleted file mode 100644 index 3f6fa32b25..0000000000 --- a/meta/recipes-support/libexif/libexif_0.6.21.bb +++ /dev/null @@ -1,19 +0,0 @@ -SUMMARY = "Library for reading extended image information (EXIF) from JPEG files" -HOMEPAGE = "http://sourceforge.net/projects/libexif" -SECTION = "libs" -LICENSE = "LGPLv2.1" -LIC_FILES_CHKSUM = "file://COPYING;md5=243b725d71bb5df4a1e5920b344b86ad" - -SRC_URI = "${SOURCEFORGE_MIRROR}/libexif/libexif-${PV}.tar.bz2 \ - file://CVE-2017-7544.patch \ - file://CVE-2016-6328.patch \ - file://CVE-2018-20030.patch \ - file://CVE-2020-13114.patch \ -" - -SRC_URI[md5sum] = "27339b89850f28c8f1c237f233e05b27" -SRC_URI[sha256sum] = "16cdaeb62eb3e6dfab2435f7d7bccd2f37438d21c5218ec4e58efa9157d4d41a" - -inherit autotools gettext - -EXTRA_OECONF += "--disable-docs" diff --git a/meta/recipes-support/libexif/libexif_0.6.22.bb b/meta/recipes-support/libexif/libexif_0.6.22.bb new file mode 100644 index 0000000000..86d4464253 --- /dev/null +++ b/meta/recipes-support/libexif/libexif_0.6.22.bb @@ -0,0 +1,24 @@ +SUMMARY = "Library for reading extended image information (EXIF) from JPEG files" +DESCRIPTION = "libexif is a library for parsing, editing, and saving EXIF data. It is \ +intended to replace lots of redundant implementations in command-line \ +utilities and programs with GUIs." +HOMEPAGE = "https://libexif.github.io/" +SECTION = "libs" +LICENSE = "LGPLv2.1" +LIC_FILES_CHKSUM = "file://COPYING;md5=243b725d71bb5df4a1e5920b344b86ad" + +def version_underscore(v): + return "_".join(v.split(".")) + +SRC_URI = "https://github.com/libexif/libexif/releases/download/libexif-${@version_underscore("${PV}")}-release/libexif-${PV}.tar.xz \ + file://CVE-2020-0198.patch \ + file://CVE-2020-0452.patch \ + " + +SRC_URI[sha256sum] = "5048f1c8fc509cc636c2f97f4b40c293338b6041a5652082d5ee2cf54b530c56" + +UPSTREAM_CHECK_URI = "https://github.com/libexif/libexif/releases/" + +inherit autotools gettext + +EXTRA_OECONF += "--disable-docs" |