diff options
| -rw-r--r-- | gnu/local.mk | 3 | ||||
| -rw-r--r-- | gnu/packages/patches/libexif-CVE-2016-6328.patch | 72 | ||||
| -rw-r--r-- | gnu/packages/patches/libexif-CVE-2017-7544.patch | 29 | ||||
| -rw-r--r-- | gnu/packages/patches/libexif-CVE-2018-20030.patch | 120 | ||||
| -rw-r--r-- | gnu/packages/photo.scm | 14 |
5 files changed, 7 insertions, 231 deletions
diff --git a/gnu/local.mk b/gnu/local.mk index f4326d4db8..ef4c5d2dcb 100644 --- a/gnu/local.mk +++ b/gnu/local.mk @@ -1167,9 +1167,6 @@ dist_patch_DATA = \ %D%/packages/patches/libbonobo-activation-test-race.patch \ %D%/packages/patches/libcanberra-sound-theme-freedesktop.patch \ %D%/packages/patches/libdrm-symbol-check.patch \ - %D%/packages/patches/libexif-CVE-2016-6328.patch \ - %D%/packages/patches/libexif-CVE-2017-7544.patch \ - %D%/packages/patches/libexif-CVE-2018-20030.patch \ %D%/packages/patches/libextractor-exiv2.patch \ %D%/packages/patches/libgeotiff-adapt-test-script-for-proj-6.2.patch \ %D%/packages/patches/libgit2-mtime-0.patch \ diff --git a/gnu/packages/patches/libexif-CVE-2016-6328.patch b/gnu/packages/patches/libexif-CVE-2016-6328.patch deleted file mode 100644 index 67fee0f528..0000000000 --- a/gnu/packages/patches/libexif-CVE-2016-6328.patch +++ /dev/null @@ -1,72 +0,0 @@ -Fix CVE-2016-6328: - -https://bugzilla.redhat.com/show_bug.cgi?id=1366239 -https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6328 - -Patch copied from upstream source repository: - -https://github.com/libexif/libexif/commit/41bd04234b104312f54d25822f68738ba8d7133d - -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; - } --- -2.16.0 - diff --git a/gnu/packages/patches/libexif-CVE-2017-7544.patch b/gnu/packages/patches/libexif-CVE-2017-7544.patch deleted file mode 100644 index c4ea373dc5..0000000000 --- a/gnu/packages/patches/libexif-CVE-2017-7544.patch +++ /dev/null @@ -1,29 +0,0 @@ -Fix CVE-2017-7544: - -https://sourceforge.net/p/libexif/bugs/130/ -https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7544 - -Patch copied from upstream bug tracker: - -https://sourceforge.net/p/libexif/bugs/130/#489a - -Index: libexif/exif-data.c -=================================================================== -RCS file: /cvsroot/libexif/libexif/libexif/exif-data.c,v -retrieving revision 1.131 -diff -u -r1.131 exif-data.c ---- a/libexif/exif-data.c 12 Jul 2012 17:28:26 -0000 1.131 -+++ b/libexif/exif-data.c 25 Jul 2017 21:34:06 -0000 -@@ -255,6 +255,12 @@ - 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; -+ } - } - } - diff --git a/gnu/packages/patches/libexif-CVE-2018-20030.patch b/gnu/packages/patches/libexif-CVE-2018-20030.patch deleted file mode 100644 index 57e4746b58..0000000000 --- a/gnu/packages/patches/libexif-CVE-2018-20030.patch +++ /dev/null @@ -1,120 +0,0 @@ -https://github.com/libexif/libexif/commit/6aa11df549114ebda520dde4cdaea2f9357b2c89.patch - -NEWS section was removed -'12' -> '30' on line 79 - -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. ---- - NEWS | 1 + - libexif/exif-data.c | 45 +++++++++++++++++++++++++++++++++++++-------- - 2 files changed, 38 insertions(+), 8 deletions(-) - -diff --git a/libexif/exif-data.c b/libexif/exif-data.c -index e35403d..a6f9c94 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> -@@ -350,6 +351,20 @@ 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 -@@ -357,13 +372,13 @@ 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; -@@ -378,9 +393,20 @@ 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; - } - -@@ -422,15 +448,18 @@ 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/gnu/packages/photo.scm b/gnu/packages/photo.scm index dfd45fd06b..4904fa1db1 100644 --- a/gnu/packages/photo.scm +++ b/gnu/packages/photo.scm @@ -206,17 +206,17 @@ cameras (CRW/CR2, NEF, RAF, DNG, and others).") (define-public libexif (package (name "libexif") - (version "0.6.21") + (version "0.6.22") (source (origin (method url-fetch) - (uri (string-append "mirror://sourceforge/libexif/libexif/" - version "/libexif-" version ".tar.bz2")) - (patches (search-patches "libexif-CVE-2016-6328.patch" - "libexif-CVE-2017-7544.patch" - "libexif-CVE-2018-20030.patch")) + (uri (string-append + "https://github.com/libexif/libexif/releases" + "/download/libexif-" + (string-map (lambda (x) (if (char=? x #\.) #\_ x)) version) + "-release/libexif-" version ".tar.xz")) (sha256 (base32 - "06nlsibr3ylfwp28w8f5466l6drgrnydgxrm4jmxzrmk5svaxk8n")))) + "0mhcad5zab7fsn120rd585h8ncwkq904nzzrq8vcd72hzk4g2j2h")))) (build-system gnu-build-system) (home-page "https://libexif.github.io/") (synopsis "Read and manipulate EXIF data in digital photographs") |