Target from: CVE Network

Basic, Rootable

CVE-2019-14813 / 0.0.0.0

4: Flags (2:system, env, root)
1: Service
1,400 pts

A direct implementation of the CVE-2019-14813 for ghostscript 9.26a
#headshot
headshoter rating: beginner

Level 7 / Senior Securitas

fox / 258th Place

4: Flags found
1: Service discovered
1,400 pts
31 minutes

Student @Avans

This is a target with direct implementation of the CVE-2019-14813 for ghostscript 9.26a and is here to assist in developing exploits for this vulnerability.

Description

A flaw was found in ghostscript, versions 9.x before 9.28, in the setsystemparams procedure where it did not properly secure its privileged calls, enabling scripts to bypass -dSAFER restrictions. A specially crafted PostScript file could disable security protection and then have access to the file system, or execute arbitrary commands.

Environment details

The system is accessible at 10.0.200.13 and runs gs -sDEVICE=ppmraw -dSAFER on port 12345/tcp.

Flags can be found at:

  • /root/ETSCTF
  • /etc/passwd gecos
  • /etc/shadow password hash
  • env variable

References

85 Headshots (newer first)

Ckabos, canary, Caritattriste, Xueba, c0nfirm, Praise, hackercon101, Anointed, sh4yo, TroyLynx, Avilix, doofyr, Pablo977, uApocryphon, cavca2012, michyamrane, SaintMArk, Blame11, darklordbnl
kowalski, 0x4d0k, falconsec, nenandjabhata, ks4v3r, xRuL0, Winsad, L0v3, jaxafed, noother, AskTaimoor, Clientname, Grosik, M4sk0ff, JDgodd, ElleuchX1, xephora, Muzec, wonderchild, abdullahzamir, 0xRar, n3h4l, hacker, g0rchy, Somorc, HuckFinn, bnal5tab, 0xDoge, Tishca, Camas, jraams

2 Writeups by:

hackercon101 (en) 4 - Well writtenc0nfirm (en) Not rated!

Activity Stream

Latest activity on the platform

fox managed to headshot [CVE-2019-14813], 41 months ago
fox Got the ETSCTF flag under the /root folder of CVE-2019-14813 for 500 points, 41 months ago
fox Gained access to data stored in environmental variables of CVE-2019-14813 for 300 points, 41 months ago
fox Discovered the ETSCTF username flag under an authentication database file of CVE-2019-14813 for 400 points, 41 months ago
fox Discovered the ETSCTF flag on gecos details of CVE-2019-14813 for 200 points, 41 months ago
fox Connected to the CVE-2019-14813 service, 41 months ago