diff options
| -rw-r--r-- | NEWS | 6 | ||||
| -rw-r--r-- | nscd/netgroupcache.c | 4 |
2 files changed, 8 insertions, 2 deletions
diff --git a/NEWS b/NEWS index dff138e8b2..15b835bd30 100644 --- a/NEWS +++ b/NEWS @@ -99,6 +99,11 @@ Security related changes: CVE-2020-29562: An assertion failure has been fixed in the iconv function when invoked with UCS4 input containing an invalid character. + CVE-2021-27645: The nameserver caching daemon (nscd), when processing + a request for netgroup lookup, may crash due to a double-free, + potentially resulting in degraded service or Denial of Service on the + local system. Reported by Chris Schanzle. + The following bugs are resolved with this release: [6889] 'PWD' mentioned but not specified @@ -195,6 +200,7 @@ The following bugs are resolved with this release: character sets (CVE-2020-27618) [26383] bind_textdomain_codeset doesn't accept //TRANSLIT anymore [26923] Assertion failure in iconv when converting invalid UCS4 (CVE-2020-29562) + [27462] nscd: double-free in nscd (CVE-2021-27645) Version 2.27 diff --git a/nscd/netgroupcache.c b/nscd/netgroupcache.c index 3adc5387d6..e75cbc0573 100644 --- a/nscd/netgroupcache.c +++ b/nscd/netgroupcache.c @@ -248,7 +248,7 @@ addgetnetgrentX (struct database_dyn *db, int fd, request_header *req, : NULL); ndomain = (ndomain ? newbuf + ndomaindiff : NULL); - buffer = newbuf; + *tofreep = buffer = newbuf; } nhost = memcpy (buffer + bufused, @@ -319,7 +319,7 @@ addgetnetgrentX (struct database_dyn *db, int fd, request_header *req, else if (status == NSS_STATUS_TRYAGAIN && e == ERANGE) { buflen *= 2; - buffer = xrealloc (buffer, buflen); + *tofreep = buffer = xrealloc (buffer, buflen); } else if (status == NSS_STATUS_RETURN || status == NSS_STATUS_NOTFOUND |