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tinyproxy: patch CVE-2026-55202
Backport commit identified by Debian[1] Details: https://nvd.nist.gov/vuln/detail/cve-2026-55202 [1]https://security-tracker.debian.org/tracker/CVE-2026-55202 Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com> Signed-off-by: Anuj Mittal <anuj.mittal@oss.qualcomm.com>
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@@ -0,0 +1,107 @@
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From 04b34f814076d790db26925d7df7c30798910c99 Mon Sep 17 00:00:00 2001
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From: rofl0r <rofl0r@users.noreply.github.com>
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Date: Sat, 18 Apr 2026 00:03:15 +0200
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Subject: [PATCH] reqs: improve stathost detection (#606)
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until now, only the basicauth code checked the host header, regular connections didn't.
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- add a new helper function to compare a hostname with optional
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trailingcolon/port against the stathost.
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- add stathost check via host header before transparent proxy check,
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else stathost might be misdetected as a trans host request.
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- refactor existing stathost checks to use the new helper
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this should make it easier to access the stathost, for example by
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injecting a host header into a curl command line with -H:
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$ curl -H "Host: tinyproxy.stats" 127.0.0.1:8080
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the stathost can also be specified as an ip address, e.g.
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Stathost "127.0.0.10" + a separate Listen statement for that ip.
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in such a case e.g.
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$ curl http://127.0.0.10:8080
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would work too, even if curl didn't add a Host header (but it does anyway).
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(cherry picked from commit 09312a185ae25cc486b4ff5987638a7917a48bce)
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CVE: CVE-2026-55202
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Upstream-Status: Backport [https://github.com/tinyproxy/tinyproxy/commit/09312a185ae25cc486b4ff5987638a7917a48bce]
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Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com>
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---
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src/reqs.c | 37 +++++++++++++++++++++++++------------
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1 file changed, 25 insertions(+), 12 deletions(-)
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diff --git a/src/reqs.c b/src/reqs.c
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index e3cfe76..d5037cf 100644
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--- a/src/reqs.c
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+++ b/src/reqs.c
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@@ -316,6 +316,17 @@ static int send_connect_method_response (struct conn_s *connptr)
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connptr->protocol.minor);
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}
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+/* determine whether a hostname with optional trailing colon/port is the
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+ stathost */
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+static int is_stathost (const char* host)
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+{
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+ const char *p = config->stathost;
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+ const char *q = host;
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+ if (!p || !q) return 0;
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+ while (*p && *(p++) == *(q++));
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+ return *p == 0 && (*q == 0 || *q == ':');
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+}
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+
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/*
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* Break the request line apart and figure out where to connect and
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* build a new request line. Finally connect to the remote server.
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@@ -384,6 +395,16 @@ BAD_REQUEST_ERROR:
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goto fail;
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}
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+ /*
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+ * Check to see if they're requesting the stat host
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+ */
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+ if (is_stathost (pseudomap_find (hashofheaders, "host"))) {
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+got_stathost:
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+ log_message (LOG_NOTICE, "Request for the stathost.");
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+ connptr->show_stats = TRUE;
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+ goto fail;
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+ }
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+
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#ifdef REVERSE_SUPPORT
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if (config->reversepath_list != NULL) {
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/*
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@@ -497,19 +518,11 @@ BAD_REQUEST_ERROR:
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}
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}
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#endif
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-
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-
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- /*
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- * Check to see if they're requesting the stat host
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- */
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- if (config->stathost && strcmp (config->stathost, request->host) == 0) {
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- log_message (LOG_NOTICE, "Request for the stathost.");
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- connptr->show_stats = TRUE;
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- goto fail;
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- }
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+ /* check whether hostname from url is the stathost */
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+ if (is_stathost (request->host))
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+ goto got_stathost;
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safefree (url);
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-
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return request;
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fail:
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@@ -1688,7 +1701,7 @@ void handle_connection (struct conn_s *connptr, union sockaddr_union* addr)
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if (!authstring && config->stathost) {
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authstring = pseudomap_find (hashofheaders, "host");
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- if (authstring && !strncmp(authstring, config->stathost, strlen(config->stathost))) {
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+ if (authstring && is_stathost(authstring)) {
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authstring = pseudomap_find (hashofheaders, "authorization");
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stathost_connect = 1;
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} else authstring = 0;
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@@ -11,6 +11,7 @@ SRC_URI = "https://github.com/${BPN}/${BPN}/releases/download/${PV}/${BP}.tar.gz
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file://CVE-2026-3945-2.patch \
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file://CVE-2026-3945-2.patch \
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file://CVE-2026-31842.patch \
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file://CVE-2026-31842.patch \
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file://CVE-2026-54387.patch \
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file://CVE-2026-54387.patch \
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file://CVE-2026-55202.patch \
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"
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"
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SRC_URI[sha256sum] = "9bcf46db1a2375ff3e3d27a41982f1efec4706cce8899ff9f33323a8218f7592"
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SRC_URI[sha256sum] = "9bcf46db1a2375ff3e3d27a41982f1efec4706cce8899ff9f33323a8218f7592"
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