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[3.10] gh-114572: Fix locking in cert_store_stats and get_ca_certs (GH-114573) #115548

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merged 1 commit into from
Feb 20, 2024

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miss-islington
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cert_store_stats and get_ca_certs query the SSLContext's X509_STORE with
X509_STORE_get0_objects, but reading the result requires a lock. See
openssl/openssl#23224 for details.

Instead, use X509_STORE_get1_objects, newly added in that PR.
X509_STORE_get1_objects does not exist in current OpenSSLs, but we can
polyfill it with X509_STORE_lock and X509_STORE_unlock.

  • Work around const-correctness problem

  • Add missing X509_STORE_get1_objects failure check

  • Add blurb
    (cherry picked from commit bce6931)

Co-authored-by: David Benjamin [email protected]

…thonGH-114573)

* pythongh-114572: Fix locking in cert_store_stats and get_ca_certs

cert_store_stats and get_ca_certs query the SSLContext's X509_STORE with
X509_STORE_get0_objects, but reading the result requires a lock. See
openssl/openssl#23224 for details.

Instead, use X509_STORE_get1_objects, newly added in that PR.
X509_STORE_get1_objects does not exist in current OpenSSLs, but we can
polyfill it with X509_STORE_lock and X509_STORE_unlock.

* Work around const-correctness problem

* Add missing X509_STORE_get1_objects failure check

* Add blurb
(cherry picked from commit bce6931)

Co-authored-by: David Benjamin <[email protected]>
@sethmlarson
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The failure on OpenSSL 3.1.3 doesn't seem related to this PR as it's happening on the 3.10 branch as well. Trying to figure out why we're seeing the new failures.

@sethmlarson
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3.10 branch appears to be failing on OpenSSL 3.1.3, so I don't think that failure is related to this PR: https://github.com/python/cpython/actions/runs/7961486528/job/21732837870

@pablogsal
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3.10 branch appears to be failing on OpenSSL 3.1.3, so I don't think that failure is related to this PR: https://github.com/python/cpython/actions/runs/7961486528/job/21732837870

I took a look and I agree that merging this looks safe so I will go ahead and do it.

@pablogsal pablogsal merged commit 37324b4 into python:3.10 Feb 20, 2024
16 of 17 checks passed
gentoo-bot pushed a commit to gentoo/cpython that referenced this pull request May 21, 2024
…rts (pythonGH-114573) (python#115548)

pythongh-114572: Fix locking in cert_store_stats and get_ca_certs (pythonGH-114573)

* pythongh-114572: Fix locking in cert_store_stats and get_ca_certs

cert_store_stats and get_ca_certs query the SSLContext's X509_STORE with
X509_STORE_get0_objects, but reading the result requires a lock. See
openssl/openssl#23224 for details.

Instead, use X509_STORE_get1_objects, newly added in that PR.
X509_STORE_get1_objects does not exist in current OpenSSLs, but we can
polyfill it with X509_STORE_lock and X509_STORE_unlock.

* Work around const-correctness problem

* Add missing X509_STORE_get1_objects failure check

* Add blurb
(cherry picked from commit bce6931)

Co-authored-by: David Benjamin <[email protected]>
gentoo-bot pushed a commit to gentoo/cpython that referenced this pull request May 21, 2024
…rts (pythonGH-114573) (python#115548)

pythongh-114572: Fix locking in cert_store_stats and get_ca_certs (pythonGH-114573)

* pythongh-114572: Fix locking in cert_store_stats and get_ca_certs

cert_store_stats and get_ca_certs query the SSLContext's X509_STORE with
X509_STORE_get0_objects, but reading the result requires a lock. See
openssl/openssl#23224 for details.

Instead, use X509_STORE_get1_objects, newly added in that PR.
X509_STORE_get1_objects does not exist in current OpenSSLs, but we can
polyfill it with X509_STORE_lock and X509_STORE_unlock.

* Work around const-correctness problem

* Add missing X509_STORE_get1_objects failure check

* Add blurb
(cherry picked from commit bce6931)

Co-authored-by: David Benjamin <[email protected]>
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4 participants