Date: Sat, 27 Jul 2013 03:10:24 -0400 From: Donald Stufft <donald@...fft.io> To: oss-security@...ts.openwall.com, kseifried@...hat.com Subject: Re: CVE Request: Insecure Software Download in pip On Jul 27, 2013, at 3:08 AM, Kurt Seifried <kseifried@...hat.com> wrote: > On 07/25/2013 03:09 AM, Donald Stufft wrote: > > I'd like to request a CVE for pip > > (https://pypi.python.org/pypi/pip/). > > > > The mirroring support (-M, --use-mirrors) was implemented without > > any sort of authenticity checks and is downloaded over plaintext > > HTTP. Further more by default it will dynamically discover the list > > of available mirrors by querying a DNS entry and extrapolating from > > that data. It does not attempt to use any sort of method of > > securing this querying of the DNS like DNSSEC. Software packages > > are downloaded over these insecure links, unpacked, and then > > typically the setup.py python file inside of them is executed. > > > > The vulnerable code is located at: - > > https://github.com/pypa/pip/blob/develop/pip/index.py#L60-L64 - > > https://github.com/pypa/pip/blob/develop/pip/index.py#L205-L207 - > > https://github.com/pypa/pip/blob/develop/pip/index.py#L553-L572 - > > https://github.com/pypa/pip/blob/develop/pip/index.py#L999-L1024 > > > > The affected versions are every released version since 0.8.1 which > > are: 0.8.1, 0.8.2, 0.8.3, 1.0, 1.0.1, 1.0.2, 1.1, 1.2, 1.2.1, 1.3, > > 1.3.1, 1.4 > > > > I'm not aware of this issue having ever had a CVE requested for it > > and my attempts to search the CVE database did not appear to turn > > up anything relevant but the search doesn't appear to be the > > greatest so I may have missed it. > > > > I'm hoping to land a patch for this in a future release (current > > iteration of patch available at > > https://github.com/dstufft/pip/compare/remove-mirror-support) but > > there is no planned fix version as of yet. > > > > ----------------- Donald Stufft PGP: 0x6E3CBCE93372DCFA // 7C6B > > 7C5D 5E2B 6356 A926 F04F 6E3C BCE9 3372 DCFA > > Was it supposed to be secure (like was this explicitly supposed to be > all encrypted/etc.)? This sounds more like security hardening than a > security vulnerability. > > - -- > Kurt Seifried Red Hat Security Response Team (SRT) > PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993 > The mirroring protocol explicitly included provisions for verification which was not being done. http://www.python.org/dev/peps/pep-0381/#mirror-authenticity ----------------- Donald Stufft PGP: 0x6E3CBCE93372DCFA // 7C6B 7C5D 5E2B 6356 A926 F04F 6E3C BCE9 3372 DCFA Download attachment "signature.asc" of type "application/pgp-signature" (842 bytes)
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