The exploit for CVE-2019-3462 uses the fact that a Release.gpg file can
contain additional content beside the expected detached signature(s).
We were passing the file unchecked to gpgv which ignores these extras
without complains, so we reuse the same line-reading implementation we
use for InRelease splitting to detect if a Release.gpg file contains
unexpected data and fail in this case given that we in the previous
commit we established that we fail in the similar InRelease case now.
The warnings were introduced 2 years ago without any reports from the
wild about them actually appearing for anyone, so now seems to be an as
good time as any to switch them to errors.
This allows rewritting the code by failing earlier instead of trying to
keep going which makes the diff a bit hard to follow but should help
simplifying reasoning about it.
References: 6376dfb8df
This fixes a security issue that can be exploited to inject arbritrary debs
or other files into a signed repository as followed:
(1) Server sends a redirect to somewhere%0a<headers for the apt method> (where %0a is
\n encoded)
(2) apt method decodes the redirect (because the method encodes the URLs before
sending them out), writting something like
somewhere\n
<headers>
into its output
(3) apt then uses the headers injected for validation purposes.
Regression-Of: c34ea12ad5
LP: #1812353
(cherry picked from commit 5eb01ec13f)
This fixes a security issue that can be exploited to inject arbritrary debs
or other files into a signed repository as followed:
(1) Server sends a redirect to somewhere%0a<headers for the apt method> (where %0a is
\n encoded)
(2) apt method decodes the redirect (because the method encodes the URLs before
sending them out), writting something like
somewhere\n
<headers>
into its output
(3) apt then uses the headers injected for validation purposes.
Regression-Of: c34ea12ad5
LP: #1812353
Telling the acquire system which keys caused the gpgv method to
succeed allows us for now just a casual check if the gpgv method
really executed catching bugs like CVE-2018-0501, but we will make use
of the information for better features in the following commits.
Having a method take a bunch of string vectors is bad style, so we
change this to a wrapping struct and adapt the rest of the code brushing
it up slightly in the process, which results even in a slightly "better"
debug output, no practical change otherwise.
Gbp-Dch: Ignore
In C++17 `register` keyword was removed. Current gcc 8.1.0 produces
following warning if `-std=c++17` flag is used:
warning: ISO C++17 does not allow 'register' storage class specifier
[-Wregister]
GCC almost completely ignores `register` keyword, with rare exception of
`-O0` when additional copy from/to stack may be generated.
For simplicity of the codebase it is better to just remove this
problematic keyword where it is not strictly required.
See: http://en.cppreference.com/w/cpp/language/storage_duration
Signed-off-by: Khem Raj <raj.khem@gmail.com>
This visits dependencies of all manually installed metapackages,
as determined by APT::Never-MarkAuto-Sections, and marks them as
automatically installed. It can be used to clean up autoflags after
a d-i install, for example.
This used to be "apt-cache stats does not take any arguments", but
replace "apt-cache stats" with "%s" so we can reuse it for other
commands.
Gbp-Dch: ignore
We called low-level ParseDepends without an architecture each time,
which means each call looked up the native architecture. Store the
native architecture in the class and use that when calling low-level
ParseDepends from the high-level ParseDepends().
This improves performance for a cache build from 2.7 to 2.5 seconds
for me.
Also avoid a call when stripping multiarch, as the native architecture
is passed in.
This is more than twice as fast as adler32, but could be made another
50% faster by calculating crcs for 8 byte blocks in "parallel" (without
data dependency) and then combining them. But that's complicated code.
Reference measurements for hashing the cache 100 times:
adler32=2.46s xxhash64=0.64 xxhash32=1.12
crc32c(this)=1.10 crc32c(opt)=0.44s
This avoids a lot of problems from local installations of
scripting languages and other stuff in /usr/local for which
maintainer scripts are not prepared.
[v3: Inherit PATH during tests, check overrides work]
[v2: Add testing]
This allows us to install matching auth files for sources.list.d
files, for example; very useful.
This converts aptmethod's authfd from one FileFd to a vector of
pointers to FileFd, as FileFd cannot be copied, and move operators
are hard.
Tagnames in configuration can include spaces (and other nasties) e.g. in
repository-specific configuration options due to Origin/Label
potentially containing a space. The configuration file format supports
parsing quoted as well as encoded spaces, but the output generated by
apt-config and other places which might be feedback into apt via
parsing (e.g. before calling apt-key in our gpgv method) do not quote
and hence produce invalid configuration files.
Changing the default to be an encoded tagname ensures that the output of
dump can be used as a config file, but other users might not expect
this so that is technically a backward-breaking change.
No user visible change expect for some years old changelog entries,
so we don't really need to add a new one for this…
Reported-By: codespell
Gbp-Dch: Ignore
The filename can be overridden, but sometimes it is useful to do it only
for the directory-part of the filename – e.g. if you want to let a flat
archive directory (like /var/cache/apt/archives) serve a pool-based
request like /pool/a/apt_version.deb.
Gbp-Dch: Ignore
David Kalnischkies
Julian Andres Klode
Julian Andres Klode
Vasya Novikov
Khem Raj
Mo Zhou
Frans Spiesschaert
Jean-Pierre Giraud
Milo Casagrande
Balint Reczey
Алексей Шилин