| <?xml version="1.0" encoding="UTF-8"?> |
| <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> |
| <glsa id="201206-15"> |
| <title>libpng: Multiple vulnerabilities</title> |
| <synopsis>Multiple vulnerabilities in libpng might allow remote attackers to |
| execute arbitrary code or cause a Denial of Service condition. |
| </synopsis> |
| <product type="ebuild">libpng</product> |
| <announced>June 22, 2012</announced> |
| <revised>June 06, 2015: 4</revised> |
| <bug>373967</bug> |
| <bug>386185</bug> |
| <bug>401987</bug> |
| <bug>404197</bug> |
| <bug>410153</bug> |
| <access>remote</access> |
| <affected> |
| <package name="media-libs/libpng" auto="yes" arch="*"> |
| <unaffected range="ge">1.5.10</unaffected> |
| <unaffected range="rge">1.2.49</unaffected> |
| <unaffected range="rge">1.2.50</unaffected> |
| <unaffected range="rge">1.2.51</unaffected> |
| <unaffected range="rge">1.2.52</unaffected> |
| <unaffected range="rge">1.2.53</unaffected> |
| <unaffected range="rge">1.2.54</unaffected> |
| <unaffected range="rge">1.2.55</unaffected> |
| <unaffected range="rge">1.2.56</unaffected> |
| <vulnerable range="lt">1.5.10</vulnerable> |
| </package> |
| </affected> |
| <background> |
| <p>libpng is a standard library used to process PNG (Portable Network |
| Graphics) images. It is used by several programs, including web browsers |
| and potentially server processes. |
| </p> |
| </background> |
| <description> |
| <p>Multiple vulnerabilities have been discovered in libpng:</p> |
| |
| <ul> |
| <li>The “embedded_profile_len()” function in pngwutil.c does not |
| check for negative values, resulting in a memory leak (CVE-2009-5063). |
| </li> |
| <li>The “png_format_buffer()” function in pngerror.c contains an |
| off-by-one error (CVE-2011-2501). |
| </li> |
| <li>The “png_rgb_to_gray()” function in pngrtran.c contains an |
| integer overflow error (CVE-2011-2690). |
| </li> |
| <li>The “png_err()” function in pngerror.c contains a NULL pointer |
| dereference error (CVE-2011-2691). |
| </li> |
| <li>The “png_handle_sCAL()” function in pngrutil.c improperly handles |
| malformed sCAL chunks(CVE-2011-2692). |
| </li> |
| <li>The “png_decompress_chunk()” function in pngrutil.c contains an |
| integer overflow error (CVE-2011-3026). |
| </li> |
| <li>The “png_inflate()” function in pngrutil.c contains and out of |
| bounds error (CVE-2011-3045). |
| </li> |
| <li>The “png_set_text_2()” function in pngset.c contains an error |
| which could result in memory corruption (CVE-2011-3048). |
| </li> |
| <li>The “png_formatted_warning()” function in pngerror.c contains an |
| off-by-one error (CVE-2011-3464). |
| </li> |
| </ul> |
| </description> |
| <impact type="normal"> |
| <p>An attacker could exploit these vulnerabilities to execute arbitrary |
| code with the permissions of the user running the vulnerable program, |
| which could be the root user, or to cause programs linked against the |
| library to crash. |
| </p> |
| </impact> |
| <workaround> |
| <p>There is no known workaround at this time.</p> |
| </workaround> |
| <resolution> |
| <p>All libpng 1.5 users should upgrade to the latest version:</p> |
| |
| <code> |
| # emerge --sync |
| # emerge --ask --oneshot --verbose ">=media-libs/libpng-1.5.10" |
| </code> |
| |
| <p>All libpng 1.2 users should upgrade to the latest version:</p> |
| |
| <code> |
| # emerge --sync |
| # emerge --ask --oneshot --verbose ">=media-libs/libpng-1.2.49" |
| </code> |
| |
| <p>Packages which depend on this library may need to be recompiled. Tools |
| such as revdep-rebuild may assist in identifying some of these packages. |
| </p> |
| </resolution> |
| <references> |
| <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-5063">CVE-2009-5063</uri> |
| <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2501">CVE-2011-2501</uri> |
| <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2690">CVE-2011-2690</uri> |
| <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2691">CVE-2011-2691</uri> |
| <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2692">CVE-2011-2692</uri> |
| <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3026">CVE-2011-3026</uri> |
| <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3045">CVE-2011-3045</uri> |
| <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3048">CVE-2011-3048</uri> |
| <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3464">CVE-2011-3464</uri> |
| </references> |
| <metadata tag="requester" timestamp="Fri, 07 Oct 2011 23:37:07 +0000"> |
| underling |
| </metadata> |
| <metadata tag="submitter" timestamp="Sat, 06 Jun 2015 23:37:53 +0000">ackle</metadata> |
| </glsa> |