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author | Akira Kakuto <kakuto@fuk.kindai.ac.jp> | 2021-03-11 23:48:40 +0000 |
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committer | Akira Kakuto <kakuto@fuk.kindai.ac.jp> | 2021-03-11 23:48:40 +0000 |
commit | a68dd11b7dbd73684616d2b5116671ee85854056 (patch) | |
tree | f2466b8f2dc6fcd12c299ae5c67a6a002aea1742 /Build/source/texk/web2c/lib/texmfmp.c | |
parent | c59c766ac61971815ebca125dcac7b3291a7389d (diff) |
Disable commands containing a character '|' for write18 in restricted mode for security.
git-svn-id: svn://tug.org/texlive/trunk@58283 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/texk/web2c/lib/texmfmp.c')
-rw-r--r-- | Build/source/texk/web2c/lib/texmfmp.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/Build/source/texk/web2c/lib/texmfmp.c b/Build/source/texk/web2c/lib/texmfmp.c index 8b898176e8a..eeb32eaf22c 100644 --- a/Build/source/texk/web2c/lib/texmfmp.c +++ b/Build/source/texk/web2c/lib/texmfmp.c @@ -610,8 +610,18 @@ runsystem (const char *cmd) if (allow == 1) status = system (cmd); - else if (allow == 2) + else if (allow == 2) { +/* + command including a character '|' is not allowed in + restricted mode for security. +*/ + size_t k; + for (k = 0; k < strlen (safecmd); k++) { + if (safecmd[k] == '|') + return 0; + } status = system (safecmd); + } /* Not really meaningful, but we have to manage the return value of system. */ if (status != 0) |