Privilege escalation in multiple RICOH printer drivers

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU25569

Risk: Low

CVSSv3.1: 7.6 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:U/RC:C]

CVE-ID: CVE-2019-19363

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to improper permissions check. A local user can who can login to the computer where the affected printer driver is installed can use a specially crafted printer driver and gain administrative privileges on the target system.

Mitigation

Vendor recommends to download the security program Ver.1.3.0.0.

Printer Driver	Version	Model Name
PCL6 Driver for Universal Print	Version 4.0 or later	All models that use this driver.
PS Driver for Universal Print	Version 4.0 or later	All models that use this driver.
PC FAX Generic Driver	All versions	All models that use this driver.
Generic PCL5 Driver	All versions	All models that use this driver.
RPCS Driver	All versions	DD 3324/DD 3334/DD 3344C/SD375 DD 6650P/SD 710
PostScript3 DriverAndPCL6 (PCL XL) Driver	All versions	Color MFPs DSc 930/935/1020/1025/1030/1045/1060/1120/1220/1225/ 1230/1245/1260 Series GS 3020c/3021c/3025c/3030c/3045c/3160c Series, IM C300/C400/C2000/C2500/C3000/C3500/C4500/C5500/ C6000 Series M C2001 MP C305/C306/C307/C401/C406/C407/C501/C2003/C2004/ C2011/C2094/C2503/C2504/C2594/C3002/C3003/C3004/C3502/C3503/C3504/C4502/C4503/C4504/C5502/C5503/C5504/C6003/C6004/C6502/C6503/C8002/C8003 Series Black and White MFPs DSm 923/928/933/940/950/1525SP/1530SP/1533SP/2525SP/2530SP/2535SP/2540SP/2550SP/2560SP/2625SP/2630SP/2635SP/ 2640SP/ 2650SP/2660SP IM 350/430/550/600/2702 Series MP 301/305/401SPF/402SPF/501SPF/601SPF/2001SP/2352/2501SP/2553/2554/2555/2852/3053/3054/3055/3352/3353/3554/3555/4002/4054/4055/5002/5054/5055/6002/6054/6055/6503/7502/7503/9002/9003 Series Printers P 501/502/800/801/C600 SP 400DN/450DN/3600DN/3600SF/3610SF/4310N/4510DN/ 4510SF/4520DN/5200S/5210SF/5210SR/5300DN/5310DN/ 6430DN/8300DN/8400DN, SP C320DN/C340DN/C342DN/C352DN/C360DNw/ C360SFNw/C360SNw/C361SFNw/C440DN/C730DN/C830DN/C831DN/C840DN/C842DN Series WIDE FORMAT MFPs MP CW2200SP/CW2201SP/W6700/W7100/W8140 Series Production Printers Pro C5100S/C5110S/C5200S/C5210S/ C7100/C7110/C7200/C7210 Series Pro 8100/8110/8120/8200/8210/8220/8300/8310/8320 Series TotalFlow Print Server R-62/R-62A/R-61A/R-61/R-60A/R-60
RPCS Raster Driver	All versions	GELJETs GX E2600/E3300N/E3350N/E5550N/E7700N/2500/3000/3000S/3000SF/3050SFN/5050N/7000 Series SG 2100N/3100SNW/3110SFNW/3120BSFNW/7100DN Series Garment Printer Ri 100

Vulnerable software versions

PCL6 Driver for Universal Print: 4.0

PS Driver for Universal Print: 4.0

PC FAX Generic Driver: All versions

Generic PCL5 Driver: All versions

RPCS Driver: All versions

PostScript3 Driver: All versions

PCL6 (PCL XL) Driver: All versions

RPCS Raster Driver: All versions

CPE2.3

• cpe:2.3:h:ricoh_company:pcl6_driver_for_universal_print:*:*:*:*:*:*:*:
• cpe:2.3:h:ricoh_company:pcl6_driver_for_universal_print:4.0:*:*:*:*:*:*:
• cpe:2.3:h:ricoh_company:ps_driver_for_universal_print:*:*:*:*:*:*:*:
• cpe:2.3:h:ricoh_company:ps_driver_for_universal_print:4.0:*:*:*:*:*:*:
• cpe:2.3:h:ricoh_company:pc_fax_generic_driver:*:*:*:*:*:*:*:
• cpe:2.3:h:ricoh_company:generic_pcl5_driver:*:*:*:*:*:*:*:
• cpe:2.3:h:ricoh_company:rpcs_driver:*:*:*:*:*:*:*:
• cpe:2.3:h:ricoh_company:postscript3_driver:*:*:*:*:*:*:*:
• cpe:2.3:h:ricoh_company:pcl6_pcl_xl_driver:*:*:*:*:*:*:*:
• cpe:2.3:h:ricoh_company:rpcs_raster_driver:*:*:*:*:*:*:*:

External links

http://www.ricoh.com/info/2020/0122_1/
http://jvn.jp/en/jp/JVN15697526/index.html
http://support.ricoh.com/bb/html/dr_ut_e/re1/model/Security_Patch/Security_Patch.htm

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.