Coverity called out an error in asn1parse_main, indicating that the
for(;;) loop which repeatedly reads from a bio and updates the length
value num, may overflow said value prior to exiting the loop.
We could probably call this a false positive, but on very large PEM
file, I suppose it could happen, so just add a check to ensure that num
doesn't go from a large positive to a large negative value inside the
loop
Fixesopenssl/private#571
Reviewed-by: Tom Cosgrove <tom.cosgrove@arm.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/24910)
In the event that a config file contains this sequence:
=======
openssl_conf = openssl_init
config_diagnostics = 1
[openssl_init]
oid_section = oids
[oids]
testoid1 = 1.2.3.4.1
testoid2 = A Very Long OID Name, 1.2.3.4.2
testoid3 = ,1.2.3.4.3
======
The leading comma in testoid3 can cause a heap buffer overflow, as the
parsing code will move the string pointer back 1 character, thereby
pointing to an invalid memory space
correct the parser to detect this condition and handle it by treating it
as if the comma doesn't exist (i.e. an empty long oid name)
Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22957)
At some point the asn1parse applet was changed to default the inform to
PEM, and defalt input file to stdin. Doing so broke the -genstr|conf options,
in that, before we attempt to generate an ASN1 block from the provided
genstr string, we attempt to read a PEM input from stdin. As a result,
this command:
openssl asn1parse -genstr OID:1.2.3.4
hangs because we are attempting a blocking read on stdin, waiting for
data that never arrives
Fix it by giving priority to genstr|genconf, such that, if set, will just run
do_generate on that string and exit
Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22957)
The asn1parse command now supports three different input formats:
openssl asn1parse -inform PEM|DER|B64
PEM: base64 encoded data enclosed by PEM markers (RFC7462)
DER: der encoded binary data
B64: raw base64 encoded data
The PEM input format is the default format. It is equivalent
to the former `-strictpem` option which is now marked obsolete
and kept for backward compatibility only.
The B64 is equivalent to the former default input format of the
asn1parse command (without `-strictpem`)
Fixes#7317
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7320)
Saurabh Kushwah
openssl-machine
Frederik Wedel-Heinen
Tomas Mraz
Neil Horman
Matt Caswell
Dr. Matthias St. Pierre
Dr. David von Oheimb