Bug 1470729
| Summary: | There is a heap overflow in the software exiv2. | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | owl337 <v.owl337> | ||||
| Component: | exiv2 | Assignee: | Jan Grulich <jgrulich> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Desktop QE <desktop-qa-list> | ||||
| Severity: | urgent | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 7.5-Alt | CC: | dan.cermak, raphael | ||||
| Target Milestone: | rc | Keywords: | Security | ||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2019-08-06 12:46:47 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Bug Depends On: | |||||||
| Bug Blocks: | 1474316 | ||||||
| Attachments: |
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Please, report this issue to upstream. Thanks! Forwarded upstream here: https://github.com/Exiv2/exiv2/issues/49 We have fixed this upstream in the master branch and backported the changes to the 0.26 branch (the testsuite has not made it yet, so make tests is not yet fixed). We are currently working on backporting the fixes further to 0.25. You can get the fixes by comparing the git HEAD of 0.26 against the tag v0.26. Fixed with exiv2-0.27.0-1.el7_6. Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2019:2101 |
Created attachment 1297685 [details] Triggered by "./exiv2 $POC" Description of problem: There is a heap overflow in the software exiv2. Version-Release number of selected component (if applicable): <= latest version How reproducible: ./exiv2 POC2 Steps to Reproduce: The output information is as follows: $./exiv2 POC2 *** Error in `/home/icy/real/exiv2/bin/.libs/lt-exiv2': malloc(): memory corruption: 0x0000000001cc71d0 *** Aborted ASAN output information: $./exiv2 POC2 ==96688==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60200000ed9c at pc 0x7fec442f1a42 bp 0x7ffdeed50350 sp 0x7ffdeed50348 READ of size 1 at 0x60200000ed9c thread T0 #0 0x7fec442f1a41 (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x43ba41) #1 0x7fec442f30e0 (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x43d0e0) #2 0x7fec44503900 (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x64d900) #3 0x7fec444fb5eb (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x6455eb) #4 0x518d8b (/home/icy/real/exiv2-asan/install/bin/exiv2+0x518d8b) #5 0x518488 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x518488) #6 0x4e2ebb (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e2ebb) #7 0x7fec43063abf (/lib/x86_64-linux-gnu/libc.so.6+0x20abf) #8 0x43b288 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43b288) 0x60200000ed9c is located 0 bytes to the right of 12-byte region [0x60200000ed90,0x60200000ed9c) allocated by thread T0 here: #0 0x4e1842 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e1842) #1 0x7fec442eac5f (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x434c5f) #2 0x7fec442f30e0 (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x43d0e0) Shadow bytes around the buggy address: 0x0c047fff9d60: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c047fff9d70: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c047fff9d80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c047fff9d90: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c047fff9da0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa =>0x0c047fff9db0: fa fa 00[04]fa fa 00 fa fa fa 00 fa fa fa 00 fa 0x0c047fff9dc0: fa fa 06 fa fa fa 00 04 fa fa 00 04 fa fa 00 04 0x0c047fff9dd0: fa fa 00 04 fa fa 00 04 fa fa 00 04 fa fa 00 04 0x0c047fff9de0: fa fa 00 04 fa fa 00 04 fa fa 00 04 fa fa 00 04 0x0c047fff9df0: fa fa 00 04 fa fa 00 04 fa fa 00 04 fa fa fd fa 0x0c047fff9e00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa Shadow byte legend (one shadow byte represents 8 application bytes): Addressable: 00 Partially addressable: 01 02 03 04 05 06 07 Heap left redzone: fa Heap right redzone: fb Freed heap region: fd Stack left redzone: f1 Stack mid redzone: f2 Stack right redzone: f3 Stack partial redzone: f4 Stack after return: f5 Stack use after scope: f8 Global redzone: f9 Global init order: f6 Poisoned by user: f7 Container overflow: fc Array cookie: ac Intra object redzone: bb ASan internal: fe Left alloca redzone: ca Right alloca redzone: cb ==96688==ABORTING The GDB debugging information is as follows: (gdb) set args POC32 (gdb) r ... (gdb) bt #0 Exiv2::Image::printIFDStructure (this=<optimized out>, io=..., out=..., option=Exiv2::kpsRecursive, start=0, bSwap=<optimized out>, c=<optimized out>, depth=0) at image.cpp:430 #1 0x00007ffff70b90e1 in Exiv2::Image::printTiffStructure (this=0x61300000de80, io=..., out=..., option=Exiv2::kpsRecursive, depth=-1, offset=<optimized out>) at image.cpp:518 #2 0x00007ffff72c9901 in Exiv2::TiffImage::printStructure (this=<optimized out>, out=..., option=<optimized out>, depth=<optimized out>) at tiffimage.cpp:348 #3 0x00007ffff72c15ec in Exiv2::TiffImage::readMetadata (this=<optimized out>) at tiffimage.cpp:191 #4 0x0000000000518d8c in Action::Print::printSummary (this=<optimized out>) at actions.cpp:289 #5 0x0000000000518489 in Action::Print::run (this=0x60400000da50, path=...) at actions.cpp:244 #6 0x00000000004e2ebc in main (argc=<optimized out>, argv=<optimized out>) at exiv2.cpp:170 (gdb) s Exiv2::Image::byteSwap4 (this=<optimized out>, buf=..., offset=<optimized out>, bSwap=<optimized out>) at image.cpp:269 269 p[0] = buf.pData_[offset]; (gdb) s ================================================================= ==45031==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60200000ed9c at pc 0x7ffff70b7a42 bp 0x7fffffffbd30 sp 0x7fffffffbd28 READ of size 1 at 0x60200000ed9c thread T0 #0 0x7ffff70b7a41 (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x43ba41) #1 0x7ffff70b90e0 (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x43d0e0) #2 0x7ffff72c9900 (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x64d900) #3 0x7ffff72c15eb (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x6455eb) #4 0x518d8b (/home/icy/real/exiv2-asan/install/bin/exiv2+0x518d8b) #5 0x518488 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x518488) #6 0x4e2ebb (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e2ebb) #7 0x7ffff5e29abf (/lib/x86_64-linux-gnu/libc.so.6+0x20abf) #8 0x43b288 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43b288) 0x60200000ed9c is located 0 bytes to the right of 12-byte region [0x60200000ed90,0x60200000ed9c) allocated by thread T0 here: #0 0x4e1842 (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e1842) #1 0x7ffff70b0c5f (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x434c5f) #2 0x7ffff70b90e0 (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x43d0e0) Shadow bytes around the buggy address: 0x0c047fff9d60: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c047fff9d70: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c047fff9d80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c047fff9d90: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c047fff9da0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa =>0x0c047fff9db0: fa fa 00[04]fa fa 00 fa fa fa 00 fa fa fa 00 fa 0x0c047fff9dc0: fa fa 06 fa fa fa 00 04 fa fa 00 04 fa fa 00 04 0x0c047fff9dd0: fa fa 00 04 fa fa 00 04 fa fa 00 04 fa fa 00 04 0x0c047fff9de0: fa fa 00 04 fa fa 00 04 fa fa 00 04 fa fa 00 04 0x0c047fff9df0: fa fa 00 04 fa fa 00 04 fa fa 00 04 fa fa fd fa 0x0c047fff9e00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa Shadow byte legend (one shadow byte represents 8 application bytes): Addressable: 00 Partially addressable: 01 02 03 04 05 06 07 Heap left redzone: fa Heap right redzone: fb Freed heap region: fd Stack left redzone: f1 Stack mid redzone: f2 Stack right redzone: f3 Stack partial redzone: f4 Stack after return: f5 Stack use after scope: f8 Global redzone: f9 Global init order: f6 Poisoned by user: f7 Container overflow: fc Array cookie: ac Intra object redzone: bb ASan internal: fe Left alloca redzone: ca Right alloca redzone: cb ==45031==ABORTING [Inferior 1 (process 45031) exited with code 01] This vulnerability was triggered in Exiv2::Image::byteSwap4 () at image.cpp:269. 265 uint32_t Image::byteSwap4(DataBuf& buf,size_t offset,bool bSwap) 266 { 267 uint32_t v; 268 char* p = (char*) &v; 269 p[0] = buf.pData_[offset]; 270 p[1] = buf.pData_[offset+1]; 271 p[2] = buf.pData_[offset+2]; 272 p[3] = buf.pData_[offset+3]; 273 return Image::byteSwap(v,bSwap); 274 } Actual results: crash Expected results: crash Additional info: This vulnerability is detected by team OWL337, with our custom fuzzer collAFL. Please contact ganshuitao and chaoz.cn if you need more info about the team, the tool or the vulnerability.