forked from pool/libssh
Ana Guerrero
4772dab91d
OBS-URL: https://build.opensuse.org/request/show/1272585 OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/libssh?expand=0&rev=77
62 lines
2.2 KiB
Diff
62 lines
2.2 KiB
Diff
From bf7b04b1665167e6bac527428c874150c6366df2 Mon Sep 17 00:00:00 2001
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From: Lucas Mulling <lucas.mulling@suse.com>
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Date: Thu, 24 Apr 2025 15:48:32 -0300
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Subject: [PATCH] misc: Fix OpenSSH banner parsing
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Signed-off-by: Lucas Mulling <lucas.mulling@suse.com>
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---
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src/misc.c | 6 ++++--
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tests/unittests/torture_misc.c | 5 +++++
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2 files changed, 9 insertions(+), 2 deletions(-)
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diff --git a/src/misc.c b/src/misc.c
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index 95512f0d..c18aac93 100644
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--- a/src/misc.c
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+++ b/src/misc.c
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@@ -1426,6 +1426,7 @@ int ssh_analyze_banner(ssh_session session, int server)
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char *tmp = NULL;
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unsigned long int major = 0UL;
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unsigned long int minor = 0UL;
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+ int off = 0;
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/*
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* The banner is typical:
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@@ -1445,8 +1446,9 @@ int ssh_analyze_banner(ssh_session session, int server)
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}
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errno = 0;
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- minor = strtoul(openssh + 10, &tmp, 10);
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- if ((tmp == (openssh + 10)) ||
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+ off = major >= 10 ? 11: 10;
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+ minor = strtoul(openssh + off, &tmp, 10);
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+ if ((tmp == (openssh + off)) ||
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((errno == ERANGE) && (major == ULONG_MAX)) ||
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((errno != 0) && (major == 0)) ||
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(minor > 100)) {
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diff --git a/tests/unittests/torture_misc.c b/tests/unittests/torture_misc.c
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index bd6bf96e..b2320a94 100644
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--- a/tests/unittests/torture_misc.c
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+++ b/tests/unittests/torture_misc.c
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@@ -448,6 +448,7 @@ static void torture_ssh_analyze_banner(void **state) {
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assert_server_banner_accepted("SSH-2.0-OpenSSH");
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assert_int_equal(0, session->openssh);
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+
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/* OpenSSH banners: big enough to extract major and minor versions */
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assert_client_banner_accepted("SSH-2.0-OpenSSH_5.9p1");
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assert_int_equal(SSH_VERSION_INT(5, 9, 0), session->openssh);
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@@ -487,6 +488,10 @@ static void torture_ssh_analyze_banner(void **state) {
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assert_server_banner_accepted("SSH-2.0-OpenSSH-keyscan");
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assert_int_equal(0, session->openssh);
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+ /* OpenSSH banners: Double digit in major version */
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+ assert_server_banner_accepted("SSH-2.0-OpenSSH_10.0p1");
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+ assert_int_equal(SSH_VERSION_INT(10, 0, 0), session->openssh);
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+
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ssh_free(session);
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}
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--
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2.49.0
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