OracleVM 3.3 : xen (OVMSA-2015-0067)

high Nessus Plugin ID 84139
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Synopsis

The remote OracleVM host is missing one or more security updates.

Description

The remote OracleVM system is missing necessary patches to address critical security updates :

- x86/traps: loop in the correct direction in compat_iret This is XSA-136. (CVE-2015-4164)

- pcnet: force the buffer access to be in bounds during tx 4096 is the maximum length per TMD and it is also currently the size of the relay buffer pcnet driver uses for sending the packet data to QEMU for further processing. With packet spanning multiple TMDs it can happen that the overall packet size will be bigger than sizeof(buffer), which results in memory corruption. Fix this by only allowing to queue maximum sizeof(buffer) bytes. This is CVE-2015-3209. (CVE-2015-3209)

- pcnet: fix Negative array index read From: Gonglei s->xmit_pos maybe assigned to a negative value (-1), but in this branch variable s->xmit_pos as an index to array s->buffer. Let's add a check for s->xmit_pos.
upstream-commit-id:
7b50d00911ddd6d56a766ac5671e47304c20a21b (CVE-2015-3209)

- pcnet: force the buffer access to be in bounds during tx 4096 is the maximum length per TMD and it is also currently the size of the relay buffer pcnet driver uses for sending the packet data to QEMU for further processing. With packet spanning multiple TMDs it can happen that the overall packet size will be bigger than sizeof(buffer), which results in memory corruption. Fix this by only allowing to queue maximum sizeof(buffer) bytes. This is CVE-2015-3209. (CVE-2015-3209)

- pcnet: fix Negative array index read From: Gonglei s->xmit_pos maybe assigned to a negative value (-1), but in this branch variable s->xmit_pos as an index to array s->buffer. Let's add a check for s->xmit_pos.
upstream-commit-id:
7b50d00911ddd6d56a766ac5671e47304c20a21b (CVE-2015-3209)

- gnttab: add missing version check to GNTTABOP_swap_grant_ref handling ... avoiding NULL derefs when the version to use wasn't set yet (via GNTTABOP_setup_table or GNTTABOP_set_version). This is XSA-134. (CVE-2015-4163)

Solution

Update the affected xen / xen-tools packages.

See Also

https://oss.oracle.com/pipermail/oraclevm-errata/2015-June/000316.html

Plugin Details

Severity: High

ID: 84139

File Name: oraclevm_OVMSA-2015-0067.nasl

Version: 2.8

Type: local

Published: 6/12/2015

Updated: 1/4/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.8

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:oracle:vm:xen, p-cpe:/a:oracle:vm:xen-tools, cpe:/o:oracle:vm_server:3.3

Required KB Items: Host/local_checks_enabled, Host/OracleVM/release, Host/OracleVM/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 6/11/2015

Vulnerability Publication Date: 6/15/2015

Reference Information

CVE: CVE-2015-3209, CVE-2015-4163, CVE-2015-4164

BID: 75123, 75141, 75149