Lexmark Security Advisory:
| Revision: | 1.0 |
| Last update: | 10 May 2019 |
| Public Release Date: | 20 May 2019 |
Summary
Multiple vulnerabilities have been identified in older Lexmark devices that would allow an attacker to execute arbitrary code on the device.
References
CVE: | CVE-2019-9930 |
| CVE-2019-9932 |
| CVE-2019-9933 |
Details
Two buffer overflow vulnerabilities and an integer overflow vulnerability have been identified in the embedded web server of older Lexmark devices that allow an attacker to execute arbitrary code on the device.
| CVSSv3 Base Score | 9.8 | (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) |
| Impact Subscore: | 5.9 | |
| Exploitability Subscore: | 3.9 | |
CVSSv3 scores are calculated in accordance with CVSS version 3.0 (https://www.first.org/cvss/user-guide)
Impact
Successful exploitation of this vulnerability can lead to remote code execution on the affected device.
Affected Products
To determine a devices firmware level, select the “Settings”->“Reports”->”Menu Setting Page” menu item from the operator panel. If the firmware level listed under “Device Information” matches any level under “Affected Releases”, then upgrade to a “Fixed Release”.
| Lexmark Models | Affected Releases | Fixed Releases |
| CS31x | LW71.VYL.P230 and previous | LW71.VYL.P231 and later |
| CS41x | LW71.VY2.P230 and previous | LW71.VY2.P231 and later |
| CS51x | LW71.VY4.P230 and previous | LW71.VY4.P231 and later |
| CX310 | LW71.GM2.P230 and previous | LW71.GM2.P231 and later |
| CX410 & XC2130 | LW71.GM4.P230 and previous | LW71.GM4.P231 and later |
| CX510 & XC2132 | LW71.GM7.P230 and previous | LW71.GM7.P231 and later |
| MS310, MS312, MS317 | LW71.PRL.P230 and previous | LW71.PRL.P231 and later |
| MS410, M1140 | LW71.PRL.P230 and previous | LW71.PRL.P231 and later |
| MS315, MS415, MS417 | LW71.TL2.P230 and previous | LW71.TL2.P231 and later |
| MS51x, MS610dn, MS617 | LW71.PR2.P230 and previous | LW71.PR2.P231 and later |
| M1145, M3150dn | LW71.PR2.P230 and previous | LW71.PR2.P231 and later |
| MS610de, M3150 | LW71.PR4.P230 and previous | LW71.PR4.P231 and later |
| MS71x, M5163dn | LW71.DN2.P230 and previous | LW71.DN2.P231 and later |
| MS810, MS811, MS812, MS817, MS818 | LW71.DN2.P230 and previous | LW71.DN2.P231 and later |
| MS810de, M5155, M5163 | LW71.DN4.P230 and previous | LW71.DN4.P231 and later |
| MS812de, M5170 | LW71.DN7.P230 and previous | LW71.DN7.P231 and later |
| MS91x | LW71.SA.P230 and previous | LW71.SA.P231 and later |
| MX31x, XM1135 | LW71.SB2.P230 and previous | LW71.SB2.P231 and later |
| MX410, MX510 & MX511 | LW71.SB4.P230 and previous | LW71.SB4.P231 and later |
| XM1140, XM1145 | LW71.SB4.P230 and previous | LW71.SB4.P231 and later |
| MX610 & MX611 | LW71.SB7.P230 and previous | LW71.SB7.P231 and later |
| XM3150 | LW71.SB7.P230 and previous | LW71.SB7.P231 and later |
| MX71x, MX81x | LW71.TU.P230 and previous | LW71.TU.P231 and later |
| XM51xx & XM71xx | LW71.TU.P230 and previous | LW71.TU.P231 and later |
| MX91x & XM91x | LW71.MG.P230 and previous | LW71.MG.P231 and later |
| MX6500e | LW71.JD.P230 and previous | LW71.JD.P231 and later |
| C746 | LHS60.CM2.P705 and previous | LHS60.CM2.P706 and later |
| C748, CS748 | LHS60.CM4.P705 and previous | LHS60.CM4.P706 and later |
| C792, CS796 | LHS60.HC.P705 and previous | LHS60.HC.P706 and later |
| C925 | LHS60.HV.P705 and previous | LHS60.HV.P706 and later |
| C950 | LHS60.TP.P705 and previous | LHS60.TP.P706 and later |
| X548 & XS548 | LHS60.VK.P705 and previous | LHS60.VK.P706 and later |
| X74x & XS748 | LHS60.NY.P705 and previous | LHS60.NY.P706 and later |
| X792 & XS79x | LHS60.MR.P705 and previous | LHS60.MR.P706 and later |
| X925 & XS925 | LHS60.HK.P705 and previous | LHS60.HK.P706 and later |
| X95x & XS95x | LHS60.TQ.P705 and previous | LHS60.TQ.P706 and later |
| 6500e | LHS60.JR.P705 and previous | LHS60.JR.P706 and later |
| C734 | LR.SK.P815 and previous | LR.SK.P816 and later |
| C736 | LR.SKE.P815 and previous | LR.SKE.P816 and later |
| E46x | LR.LBH.P815 and previous | LR.LBH.P816 and later |
| T65x | LR.JP.P815 and previous | LR.JP.P816 and later |
| X46x | LR.BS.P815 and previous | LR.BS.P816 and later |
| X65x | LR.MN.P815 and previous | LR.MN.P816 and later |
| X73x | LR.FL.P815 and previous | LR.FL.P816 and later |
| W850 | LP.JB.P815 and previous | LP.JB.P816 and later |
| X86x | LP.SP.P815 and previous | LP.SP.P816 and later |
Obtaining Updated Software
To obtain firmware that resolves this issue or if you have special code, please contact Lexmark’s Technical Support Center at http://support.lexmark.com to find your local support center.
Workarounds
Lexmark recommends a firmware update if your device has affected firmware.
Exploitation and Public Announcements
Lexmark is not aware of any malicious use against Lexmark products of the vulnerability described in this advisory.
Lexmark would like to thank Daniel Romero and Mario Rivas of NCC group for bringing this issue to our attention.
Status of this Notice:
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND IS PROVIDED WITHOUT ANY EXPRESS OR IMPLIED GUARANTEE OR WARRANTY WHATSOEVER, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR USE OR PURPOSE. LEXMARK RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
Distribution
This advisory is posted on Lexmark’s web site at http://support.lexmark.com/alerts. Future updates to this document will be posted on Lexmark’s web site at the same location.
Revision History
| Revision | Date | Reason |
| 1.0 | 20 May 2019 | Initial Public Release |
Top
LEGACY ID: TE920