Lexmark Security Advisory:
| Revision: | 1.0 |
| Last update: | 11 February 2019 |
| Public Release Date: | 11 February 2019 |
Summary
Many older Lexmark devices contain a vulnerability that allows an unauthenticated user to purge stored shortcuts.
References
CVE: CVE-2019-6489
Details
A vulnerability has been identified in the Embedded Web Server used in older generation Lexmark devices. The vulnerability allows an unauthenticated user to purge/erase shortcuts stored on the device.
| CVSSv3 Base Score | 6.5 | (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L) |
| Impact Subscore: | 2.5 | |
| 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 the erasure of stored shortcuts on the affected device.
Affected Products
To determine a device's 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 |
| CX310 | LW71.GM2.P216 and previous | LW71.GM2.P217 and later |
| CX410 & XC2130 | LW71.GM4.P216 and previous | LW71.GM4.P217 and later |
| CX510 & XC2132 | LW71.GM7.P216 and previous | LW71.GM7.P217 and later |
| MX31x, XM1135 | LW71.SB2.P216 and previous | LW71.SB2.P217 and later |
| MX410, MX510 & MX511 | LW71.SB4.P216 and previous | LW71.SB4.P217 and later |
| XM1140, XM1145 | LW71.SB4.P216 and previous | LW71.SB4.P217 and later |
| MX610 & MX611 | LW71.SB7.P216 and previous | LW71.SB7.P217 and later |
| XM3150 | LW71.SB7.P216 and previous | LW71.SB7.P217 and later |
| MX71x | LW71.TU.P216 and previous | LW71.TU.P217 and later |
| MX81x | LW71.TU.P216 and previous | LW71.TU.P217 and later |
| XM51xx & XM71xx | LW71.TU.P216 and previous | LW71.TU.P217 and later |
| MX91x & XM91x | LW71.MG.P216 and previous | LW71.MG.P217 and later |
| MX6500e | LW71.JD.P216 and previous | LW71.JD.P217 and later |
| X548 & XS548 | LHS60.VK.P682 and previous | LHS60.VK.P683 and later |
| X74x & XS748 | LHS60.NY.P682 and previous | LHS60.NY.P683 and later |
X792 & XS79x | LHS60.MR.P682 and previous | LHS60.MR.P683 and later |
| X925 & XS925 | LHS60.HK.P682 and previous | LHS60.HK.P683 and later |
| X95x & XS95x | LHS60.TQ.P682 and previous | LHS60.TQ.P683 and later |
| 6500e | LHS60.JR.P809 and previous | LHS60.JR.P810 and later |
| X46x | LR.BS.P809 and previous | LR.BS.P810 and later |
| X65x | LR.MN.P809 and previous | LR.MN.P810 and later |
| X73x | LR.FL.P809 and previous | LR.FL.P810 and later |
| X86x | LP.SP.P809 and previous | LP.SP.P810 and later |
Obtained 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 Matthew Lichtenberger of Apple for bringing this 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 | 11 - February - 2019 | Initial Public Release |
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LEGACY ID: TE912