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DescriptionCedric Buissart
2016-09-05 08:41:50 UTC
Description of problem:
Corrupted RPM files may crash rpm in headerSigVerify()
Version-Release number of selected component (if applicable): all, including upstream
How reproducible: 100%
Steps to Reproduce:
1. corrupt an RPM file to add a DSA, RSA or SHA1 header flag that contains data outside of allocated memory (offset + length goes beyond data length)
2. rpm -qp <RPM>
Actual results:
Crash and/or valgrind warning, with the following trace :
==11445== Invalid read of size 8
==11445== at 0x4C2E25E: memcpy@@GLIBC_2.14 (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==11445== by 0x4E62530: UnknownInlinedFun (string3.h:51)
==11445== by 0x4E62530: headerSigVerify (package.c:240)
==11445== by 0x4E62530: headerVerify (package.c:363)
==11445== by 0x4E62915: rpmpkgReadHeader (package.c:457)
==11445== by 0x4E62BEA: rpmpkgRead (package.c:578)
==11445== by 0x4E6352D: rpmReadPackageFile (package.c:717)
==11445== by 0x4E6EB81: rpmgiReadHeader (rpmgi.c:90)
==11445== by 0x4E6EB81: rpmgiLoadReadHeader (rpmgi.c:126)
==11445== by 0x4E6EB81: rpmgiNext (rpmgi.c:216)
==11445== by 0x4E671D8: rpmgiShowMatches (query.c:274)
==11445== by 0x4E671D8: rpmcliArgIter (query.c:518)
==11445== by 0x4E672A6: rpmcliQuery (query.c:568)
==11445== by 0x401918: main (rpmqv.c:304)
Expected results:
An error message about invalid header followed by graceful exit.
Additional info:
See https://bugzilla.redhat.com/show_bug.cgi?id=1371487
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/RHBA-2017:2160