Bug 1464691
| Summary: | Null pointer dereference vulnerability in _nc_parse_entry function of ncurses tool with latest verison(6.0) | ||||||
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| Product: | Red Hat Enterprise Linux 7 | Reporter: | owl337 <v.owl337> | ||||
| Component: | ncurses | Assignee: | Miroslav Lichvar <mlichvar> | ||||
| Status: | CLOSED DUPLICATE | QA Contact: | BaseOS QE - Apps <qe-baseos-apps> | ||||
| Severity: | urgent | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 7.5-Alt | CC: | dickey, jkejda | ||||
| Target Milestone: | rc | Keywords: | Security | ||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2017-07-26 13:07:44 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Bug Depends On: | |||||||
| Bug Blocks: | 1473310 | ||||||
| Attachments: |
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Severity medium (fix will appear in the weekly updates). *** This bug has been marked as a duplicate of bug 1473310 *** |
Created attachment 1291518 [details] Triggered by "infotocp POC5" Description of problem: The entryp->uses[i].name was written to NULL that led to NULL point dereference in parse_entry.c:504. Version-Release number of selected component (if applicable): How reproducible: infotocap $POC Steps to Reproduce: The debug information is as follows: $gdb infotocap … (gdb) set args $POC (gdb) r ... (gdb) bt #0 __strchr_sse2 () at ../sysdeps/x86_64/multiarch/../strchr.S:24 #1 0x00000000004381dc in _nc_parse_entry (entryp=0x7fffffffaf88, literal=<optimized out>, silent=<optimized out>) at ../ncurses/./tinfo/parse_entry.c:504 #2 0x00000000004317d3 in _nc_read_entry_source (fp=<optimized out>, buf=<optimized out>, literal=0, silent=<optimized out>, hook=<optimized out>) at ../ncurses/./tinfo/comp_parse.c:227 #3 0x0000000000402c57 in main (argc=<optimized out>, argv=<optimized out>) at ../progs/tic.c:929 Actual results: crash Expected results: crash Additional info: Credits: This vulnerability is detected by team OWL337, with our custom fuzzer coll AFL. Please contact ganshuitao and chaoz.cn if you need more info about the team, the tool or the vulnerability.