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Examples / Report #2912277 Saved analysis

Hackers Attack Curl Vulnerability Accessing Sensitive Information

curl · 2024-12-2317.4s analysis · $0.006 in model calls

What the report claims

A critical security flaw in Curl may allow attackers to access sensitive information by leaking passwords when curl follows an HTTP redirect using a .netrc file.

Compare with curl's recorded outcome

Labeled AI slop

curl's maintainer lists this report as AI slop

Shown for comparison after analysis. The pipeline did not see this label.

ProveIt's finding

More detail needed

There is not enough information to verify the reported bug.

Why this finding?
  • No curl source code was provided for the target revision (a91b2a0beb91), making code-level verification impossible
  • The report cites non-existent curl options (CURLOPT_NETRC, CURLOPT_REDIRPROXY, CURLOPT_SSH_PRIVATE_KEYFILE), indicating the reporter may not understand curl's actual API
  • The report lacks concrete reproduction steps, specific version tested, network traces, or a code path from attacker-controlled input to the alleged leak
  • Deterministic checks returned 'nothing_to_check', confirming no verifiable artifacts were found
What still needs checking
  • Actual curl option names used (likely CURLOPT_NETRC_FILE for .netrc handling)
  • Concrete reproduction steps with command line or code example
  • Specific curl version where the issue was observed
  • Network capture or log showing the alleged password leakage
  • Code path analysis showing where credentials from .netrc are incorrectly sent during redirect
How this analysis ran 3 claims · 0 citations verified

Checked against curl master on 2024-12-23 (a91b2a0beb91). Test evaluation split. Citation verification checks that a referenced line was in the evidence; it does not prove the model interpreted it correctly.

1 · Grounding
nothing to check
no model · 0 references checked out, 0 did not
2 · Claims
NVIDIA-Nemotron-3-Nano-30B-A3B
3 claims · 1050 tokens · $0.0001
3 · Evidence
0 code snippets
real curl source at a91b2a0beb91
4 · Judgment
Nemotron-3-Ultra-550b-a55b
3756 tokens · 12.2s · $0.0060
5 · Receipts
0 of 0 citations verified
every citation must point at code the judge was shown
Review a draft reply to the reporter

Edit and verify before sending.

Thank you for the report. We cannot evaluate it because: (1) the cited options (CURLOPT_NETRC, CURLOPT_REDIRPROXY, CURLOPT_SSH_PRIVATE_KEYFILE) do not exist in curl — the .netrc option is CURLOPT_NETRC_FILE; (2) no source code was available for the revision you target; (3) the report lacks concrete reproduction steps, a specific tested version, or evidence of the leak. Please provide: the exact curl command or code used, the curl version, a network trace showing the credential leakage, and the .netrc file format (redacted).

Inspect all claims and source code 3 claims · 0 code excerpts

Report claims

C1flaw not verifiable

curl may leak passwords used for the host that redirects it to the next host

Read the reasoning

The claim references CURLOPT_NETRC, which is not a valid curl option (the correct option is CURLOPT_NETRC_FILE). No curl source code was provided for analysis, and the deterministic checks returned 'nothing_to_check'. Without code to examine the .netrc credential handling during redirects, this claim cannot be verified or contradicted.

C2trigger not verifiable

curl transfer to a.tld redirects to b.tld along with the .netrc file entry for b.tld password vulnerability

Read the reasoning

The claim references CURLOPT_REDIRPROXY, which is not a valid curl option. The report describes a redirect scenario (a.tld to b.tld) with .netrc credentials but provides no concrete reproduction steps, version-specific details, or code path. No source code was provided to analyze redirect credential handling.

C3impact not verifiable

This may expose passwords when it passes through the network

Read the reasoning

The claim references CURLOPT_SSH_PRIVATE_KEYFILE, which is unrelated to .netrc file handling. The impact claim ('expose passwords when it passes through the network') is vague and unsupported by any technical detail. No code or network trace was provided to evaluate credential exposure.

Read the original report

Full report on HackerOne ↗

## Summary: [A critical security flaw in Curl. This is a data transfer tool and may potentially allow attackers to access sensitive information.] ## Affected version [6.5 through 8.11.0] ## Steps To Reproduce: Security vulnerability when curl is used with a .netrc file for the credentials and also uses a HTTP redirect. Curl may leak passwords used for the host that redirects it to the next host. 1.The .netrc file contains an entry matching the redirect target hostname 2. The entry either omits the password or both the login and password ## Supporting Material/References: Affects both the libcurl library and the curl command-line tool. ## Impact ## Summary: A curl transfer to a.tld redirect to b.tld along with the .netrc file entry for b.tld password vulnerability. This may expose passwords when it passes through the network.

Source code

No source code was retrieved for this analysis. The evidence may be incomplete.