Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date: Thu,  6 Aug 2015 10:32:03 -0400 (EDT)
From: cve-assign@...re.org
To: ppandit@...hat.com
Cc: cve-assign@...re.org, oss-security@...ts.openwall.com
Subject: Re: CVE request: Qemu: buffer overflow in virtio-serial

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

> https://github.com/qemu/qemu/commit/7882080388be5088e72c425b02223c02e6cb4295
> https://lists.gnu.org/archive/html/qemu-devel/2015-07/msg05458.html

> Don't assume a specific layout for control messages.

> hw/char/virtio-serial-bus.c

> send_control_msg

> -    memcpy(elem.in_sg[0].iov_base, buf, len);
> +    /* TODO: detect a buffer that's too short, set NEEDS_RESET */
> +    iov_from_buf(elem.in_sg, elem.in_num, 0, buf, len);

> Qemu emulator built with the virtio-serial vmchannel support is vulnerable to
> a buffer overflow issue. It could occur while exchanging virtio control
> messages between guest & the host.
> 
> A malicious guest could use this flaw to corrupt few bytes of Qemu memory
> area, potentially crashing the Qemu process.

Use CVE-2015-5745.

- -- 
CVE assignment team, MITRE CVE Numbering Authority
M/S M300
202 Burlington Road, Bedford, MA 01730 USA
[ PGP key available through http://cve.mitre.org/cve/request_id.html ]
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1

iQEcBAEBCAAGBQJVw283AAoJEKllVAevmvmsfgwH/2QCbFLQJTRfcaExszbdczlX
ciSqTWOuUev2zrch+wptzCNIzmuRo+16quDQ+sNcgefTFQwZQs14XYMp9n3xv2Tg
w++oYByFgWJps1tev18UiHIRUA7YEvl7LDYL++BgHeL3McOIXowilj0+0p7kgx1b
AI6Jx566eBecMcoRQtPH4X0zKg5Hrd7k97rHGqPhza1eKjkweSVfuHVliuFTkIH9
le8+84TxOWlTAZv4xgmDDkCpPINJmATPnc3zfHNjpRyHVFB2jVahLplSDOOdrE2w
uqe59griVgciusqQnhStau5bZXh1gUzGN2yqz/XCkXua135o/vMN/NgnUxJ1GbA=
=P2BP
-----END PGP SIGNATURE-----

Powered by blists - more mailing lists

Your e-mail address:

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.