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| author | Ludovic Courtès <ludo@gnu.org> | 2017-02-10 10:34:33 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2017-02-10 16:44:57 +0100 |
| commit | 50b8a527efe375ac5377670ff0f159fbbce45312 (patch) | |
| tree | a367acc2ab781b229f516835bdec4cb68d503d74 | |
| parent | afd532337821f4bdfe9d1f0b6387a1c26df1f458 (diff) | |
| download | guix-50b8a527efe375ac5377670ff0f159fbbce45312.tar guix-50b8a527efe375ac5377670ff0f159fbbce45312.tar.gz | |
gnu: bash: Add graft for patch #7 [fixes CVE-2017-5932].
* gnu/packages/bash.scm (bash)[replacement]: New field.
(bash-minimal): Likewise.
(url-fetch/reset-patch-level): New procedure.
(bash/fixed): New variable.
| -rw-r--r-- | gnu/packages/bash.scm | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/gnu/packages/bash.scm b/gnu/packages/bash.scm index dcf771aef0..c121fd84d6 100644 --- a/gnu/packages/bash.scm +++ b/gnu/packages/bash.scm @@ -28,6 +28,9 @@ #:use-module (guix packages) #:use-module (guix download) #:use-module (guix utils) + #:use-module (guix gexp) + #:use-module (guix monads) + #:use-module (guix store) #:use-module (guix build-system gnu) #:autoload (guix gnupg) (gnupg-verify*) #:autoload (guix hash) (port-sha256) @@ -95,6 +98,7 @@ number/base32-hash tuples, directly usable in the 'patch-series' form." (version "4.4")) (package (name "bash") + (replacement bash/fixed) (source (origin (method url-fetch) (uri (string-append @@ -181,6 +185,7 @@ without modification.") ;; A stripped-down Bash for non-interactive use. (package (inherit bash) (name "bash-minimal") + (replacement #f) ;not vulnerable to CVE-2017-5932 since it lacks completion (inputs '()) ; no readline, no curses ;; No "include" output because there's no support for loadable modules. @@ -236,6 +241,43 @@ without modification.") (delete-file-recursively (string-append out "/share")) #t)))))))))) +(define* (url-fetch/reset-patch-level url hash-algo hash + #:optional name + #:key (system (%current-system)) guile) + "Fetch the Bash patch from URL and reset its 'PATCHLEVEL' definition so it +can apply to a patch-level 0 Bash." + (mlet* %store-monad ((name -> (or name (basename url))) + (patch (url-fetch url hash-algo hash + (string-append name ".orig") + #:system system + #:guile guile))) + (gexp->derivation name + (with-imported-modules '((guix build utils)) + #~(begin + (use-modules (guix build utils)) + (copy-file #$patch #$output) + (substitute* #$output + (("PATCHLEVEL [0-6]+") + "PATCHLEVEL 0")))) + #:guile-for-build guile + #:system system))) + +(define bash/fixed ;CVE-2017-5932 (RCE with completion) + (package + (inherit bash) + (version "4.4.A") ;4.4.0 + patch #7 + (replacement #f) + (source + (origin + (inherit (package-source bash)) + (patches (cons (origin + (method url-fetch/reset-patch-level) + (uri (patch-url 7)) + (sha256 + (base32 + "1bzdsnqaf05gdbqpsixhan8vygjxpcxlz1dd8d9f5jdznw3wq76y"))) + (origin-patches (package-source bash)))))))) + (define-public bash-completion (package (name "bash-completion") |